Home / 21,173.77-29,146.47-18,301.19

Finding the Fourth Proportional to 21,173.77, 29,146.47 and 18,301.19

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Solution

The fourth proportional to 21,173.77, 29,146.47 and 18,301.19 is: 25,192.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173.77 : 29,146.47 = 18,301.19 : x
  2. Step 2: Convert to fraction form
    21,173.77/29,146.47 = 18,301.19/x
  3. Step 3: Cross multiply
    21,173.77x = 29,146.47 × 18,301.19
  4. Step 4: Simplify right side
    21,173.77x = 533,415,085.30
  5. Step 5: Solve for x
    x = 533,415,085.30/21,173.77
  6. Step 6: Final answer
    x = 25,192.26

Related Problems

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Half scale
Find fourth proportional to 42,347.54, 58,292.94 and 36,602.38
Double scale
Find fourth proportional to 21,174.77, 29,147.85 and 18,302.19
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.