Home / 21,242.57-29,307.44-13,173.32

Finding the Fourth Proportional to 21,242.57, 29,307.44 and 13,173.32

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Solution

The fourth proportional to 21,242.57, 29,307.44 and 13,173.32 is: 18,174.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.57 : 29,307.44 = 13,173.32 : x
  2. Step 2: Convert to fraction form
    21,242.57/29,307.44 = 13,173.32/x
  3. Step 3: Cross multiply
    21,242.57x = 29,307.44 × 13,173.32
  4. Step 4: Simplify right side
    21,242.57x = 386,076,073.10
  5. Step 5: Solve for x
    x = 386,076,073.10/21,242.57
  6. Step 6: Final answer
    x = 18,174.64

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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.