Home / 15,394.18-21,229.77-11,425.18

Finding the Fourth Proportional to 15,394.18, 21,229.77 and 11,425.18

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Solution

The fourth proportional to 15,394.18, 21,229.77 and 11,425.18 is: 15,756.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,394.18 : 21,229.77 = 11,425.18 : x
  2. Step 2: Convert to fraction form
    15,394.18/21,229.77 = 11,425.18/x
  3. Step 3: Cross multiply
    15,394.18x = 21,229.77 × 11,425.18
  4. Step 4: Simplify right side
    15,394.18x = 242,553,943.61
  5. Step 5: Solve for x
    x = 242,553,943.61/15,394.18
  6. Step 6: Final answer
    x = 15,756.21

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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.