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Finding the Fourth Proportional to 14,687.87, 20,261.75 and 9,377.10

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Solution

The fourth proportional to 14,687.87, 20,261.75 and 9,377.10 is: 12,935.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,687.87 : 20,261.75 = 9,377.10 : x
  2. Step 2: Convert to fraction form
    14,687.87/20,261.75 = 9,377.10/x
  3. Step 3: Cross multiply
    14,687.87x = 20,261.75 × 9,377.10
  4. Step 4: Simplify right side
    14,687.87x = 189,996,409.04
  5. Step 5: Solve for x
    x = 189,996,409.04/14,687.87
  6. Step 6: Final answer
    x = 12,935.60

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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.