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Finding the Fourth Proportional to 18,729.76, 28,073.04 and 7,035.52

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Solution

The fourth proportional to 18,729.76, 28,073.04 and 7,035.52 is: 10,545.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.76 : 28,073.04 = 7,035.52 : x
  2. Step 2: Convert to fraction form
    18,729.76/28,073.04 = 7,035.52/x
  3. Step 3: Cross multiply
    18,729.76x = 28,073.04 × 7,035.52
  4. Step 4: Simplify right side
    18,729.76x = 197,508,434.38
  5. Step 5: Solve for x
    x = 197,508,434.38/18,729.76
  6. Step 6: Final answer
    x = 10,545.17

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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.