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Finding the Fourth Proportional to 18,294.78, 25,248.06 and 11,127.50

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Solution

The fourth proportional to 18,294.78, 25,248.06 and 11,127.50 is: 15,356.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,294.78 : 25,248.06 = 11,127.50 : x
  2. Step 2: Convert to fraction form
    18,294.78/25,248.06 = 11,127.50/x
  3. Step 3: Cross multiply
    18,294.78x = 25,248.06 × 11,127.50
  4. Step 4: Simplify right side
    18,294.78x = 280,947,661.41
  5. Step 5: Solve for x
    x = 280,947,661.41/18,294.78
  6. Step 6: Final answer
    x = 15,356.71

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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.