Home / 21,173.04-29,220.12-12,222.18

Finding the Fourth Proportional to 21,173.04, 29,220.12 and 12,222.18

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Solution

The fourth proportional to 21,173.04, 29,220.12 and 12,222.18 is: 16,867.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173.04 : 29,220.12 = 12,222.18 : x
  2. Step 2: Convert to fraction form
    21,173.04/29,220.12 = 12,222.18/x
  3. Step 3: Cross multiply
    21,173.04x = 29,220.12 × 12,222.18
  4. Step 4: Simplify right side
    21,173.04x = 357,133,566.26
  5. Step 5: Solve for x
    x = 357,133,566.26/21,173.04
  6. Step 6: Final answer
    x = 16,867.37

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Half scale
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Double scale
Find fourth proportional to 21,174.04, 29,221.50 and 12,223.18
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.