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Finding the Fourth Proportional to 15,101.17, 20,839.86 and 8,387.23

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Solution

The fourth proportional to 15,101.17, 20,839.86 and 8,387.23 is: 11,574.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,101.17 : 20,839.86 = 8,387.23 : x
  2. Step 2: Convert to fraction form
    15,101.17/20,839.86 = 8,387.23/x
  3. Step 3: Cross multiply
    15,101.17x = 20,839.86 × 8,387.23
  4. Step 4: Simplify right side
    15,101.17x = 174,788,698.99
  5. Step 5: Solve for x
    x = 174,788,698.99/15,101.17
  6. Step 6: Final answer
    x = 11,574.51

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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.