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Finding the Fourth Proportional to 18,950.29, 28,425.51 and 8,549.89

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Solution

The fourth proportional to 18,950.29, 28,425.51 and 8,549.89 is: 12,824.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,950.29 : 28,425.51 = 8,549.89 : x
  2. Step 2: Convert to fraction form
    18,950.29/28,425.51 = 8,549.89/x
  3. Step 3: Cross multiply
    18,950.29x = 28,425.51 × 8,549.89
  4. Step 4: Simplify right side
    18,950.29x = 243,034,983.69
  5. Step 5: Solve for x
    x = 243,034,983.69/18,950.29
  6. Step 6: Final answer
    x = 12,824.87

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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.