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Finding the Fourth Proportional to 14,908.82, 20,572.89 and 8,775.87

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Solution

The fourth proportional to 14,908.82, 20,572.89 and 8,775.87 is: 12,109.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,908.82 : 20,572.89 = 8,775.87 : x
  2. Step 2: Convert to fraction form
    14,908.82/20,572.89 = 8,775.87/x
  3. Step 3: Cross multiply
    14,908.82x = 20,572.89 × 8,775.87
  4. Step 4: Simplify right side
    14,908.82x = 180,544,898.11
  5. Step 5: Solve for x
    x = 180,544,898.11/14,908.82
  6. Step 6: Final answer
    x = 12,109.94

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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.