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Finding the Fourth Proportional to 18,707, 28,101.18 and 11,314.92

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Solution

The fourth proportional to 18,707, 28,101.18 and 11,314.92 is: 16,996.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,707 : 28,101.18 = 11,314.92 : x
  2. Step 2: Convert to fraction form
    18,707/28,101.18 = 11,314.92/x
  3. Step 3: Cross multiply
    18,707x = 28,101.18 × 11,314.92
  4. Step 4: Simplify right side
    18,707x = 317,962,603.61
  5. Step 5: Solve for x
    x = 317,962,603.61/18,707
  6. Step 6: Final answer
    x = 16,996.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.