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Finding the Fourth Proportional to 14,776.38, 20,388.92 and 8,807.90

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Solution

The fourth proportional to 14,776.38, 20,388.92 and 8,807.90 is: 12,153.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,776.38 : 20,388.92 = 8,807.90 : x
  2. Step 2: Convert to fraction form
    14,776.38/20,388.92 = 8,807.90/x
  3. Step 3: Cross multiply
    14,776.38x = 20,388.92 × 8,807.90
  4. Step 4: Simplify right side
    14,776.38x = 179,583,422.48
  5. Step 5: Solve for x
    x = 179,583,422.48/14,776.38
  6. Step 6: Final answer
    x = 12,153.41

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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.