Home / 21,281.52-29,387.04-13,337.40

Finding the Fourth Proportional to 21,281.52, 29,387.04 and 13,337.40

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Solution

The fourth proportional to 21,281.52, 29,387.04 and 13,337.40 is: 18,417.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.52 : 29,387.04 = 13,337.40 : x
  2. Step 2: Convert to fraction form
    21,281.52/29,387.04 = 13,337.40/x
  3. Step 3: Cross multiply
    21,281.52x = 29,387.04 × 13,337.40
  4. Step 4: Simplify right side
    21,281.52x = 391,946,707.30
  5. Step 5: Solve for x
    x = 391,946,707.30/21,281.52
  6. Step 6: Final answer
    x = 18,417.23

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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.