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Finding the Fourth Proportional to 18,665.04, 28,007.28 and 14,691.99

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Solution

The fourth proportional to 18,665.04, 28,007.28 and 14,691.99 is: 22,045.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.04 : 28,007.28 = 14,691.99 : x
  2. Step 2: Convert to fraction form
    18,665.04/28,007.28 = 14,691.99/x
  3. Step 3: Cross multiply
    18,665.04x = 28,007.28 × 14,691.99
  4. Step 4: Simplify right side
    18,665.04x = 411,482,677.69
  5. Step 5: Solve for x
    x = 411,482,677.69/18,665.04
  6. Step 6: Final answer
    x = 22,045.64

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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.