Home / 15,385.52-21,233.68-9,421.20

Finding the Fourth Proportional to 15,385.52, 21,233.68 and 9,421.20

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Solution

The fourth proportional to 15,385.52, 21,233.68 and 9,421.20 is: 13,002.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,385.52 : 21,233.68 = 9,421.20 : x
  2. Step 2: Convert to fraction form
    15,385.52/21,233.68 = 9,421.20/x
  3. Step 3: Cross multiply
    15,385.52x = 21,233.68 × 9,421.20
  4. Step 4: Simplify right side
    15,385.52x = 200,046,746.02
  5. Step 5: Solve for x
    x = 200,046,746.02/15,385.52
  6. Step 6: Final answer
    x = 13,002.27

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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.