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Finding the Fourth Proportional to 14,950.71, 20,631.42 and 8,985.69

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Solution

The fourth proportional to 14,950.71, 20,631.42 and 8,985.69 is: 12,399.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,950.71 : 20,631.42 = 8,985.69 : x
  2. Step 2: Convert to fraction form
    14,950.71/20,631.42 = 8,985.69/x
  3. Step 3: Cross multiply
    14,950.71x = 20,631.42 × 8,985.69
  4. Step 4: Simplify right side
    14,950.71x = 185,387,544.38
  5. Step 5: Solve for x
    x = 185,387,544.38/14,950.71
  6. Step 6: Final answer
    x = 12,399.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.