Home / 21,209.52-29,287.68-13,265.28

Finding the Fourth Proportional to 21,209.52, 29,287.68 and 13,265.28

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Solution

The fourth proportional to 21,209.52, 29,287.68 and 13,265.28 is: 18,317.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.52 : 29,287.68 = 13,265.28 : x
  2. Step 2: Convert to fraction form
    21,209.52/29,287.68 = 13,265.28/x
  3. Step 3: Cross multiply
    21,209.52x = 29,287.68 × 13,265.28
  4. Step 4: Simplify right side
    21,209.52x = 388,509,275.75
  5. Step 5: Solve for x
    x = 388,509,275.75/21,209.52
  6. Step 6: Final answer
    x = 18,317.68

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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.