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Finding the Fourth Proportional to 18,713.39, 28,045.84 and 7,607.18

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Solution

The fourth proportional to 18,713.39, 28,045.84 and 7,607.18 is: 11,400.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,713.39 : 28,045.84 = 7,607.18 : x
  2. Step 2: Convert to fraction form
    18,713.39/28,045.84 = 7,607.18/x
  3. Step 3: Cross multiply
    18,713.39x = 28,045.84 × 7,607.18
  4. Step 4: Simplify right side
    18,713.39x = 213,349,753.13
  5. Step 5: Solve for x
    x = 213,349,753.13/18,713.39
  6. Step 6: Final answer
    x = 11,400.91

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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.