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Finding the Fourth Proportional to 14,889.38, 20,551.05 and 8,605.40

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Solution

The fourth proportional to 14,889.38, 20,551.05 and 8,605.40 is: 11,877.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,889.38 : 20,551.05 = 8,605.40 : x
  2. Step 2: Convert to fraction form
    14,889.38/20,551.05 = 8,605.40/x
  3. Step 3: Cross multiply
    14,889.38x = 20,551.05 × 8,605.40
  4. Step 4: Simplify right side
    14,889.38x = 176,849,902.91
  5. Step 5: Solve for x
    x = 176,849,902.91/14,889.38
  6. Step 6: Final answer
    x = 11,877.59

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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.