Home / 14,787.24-20,406.18-9,119.70

Finding the Fourth Proportional to 14,787.24, 20,406.18 and 9,119.70

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Solution

The fourth proportional to 14,787.24, 20,406.18 and 9,119.70 is: 12,585.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,787.24 : 20,406.18 = 9,119.70 : x
  2. Step 2: Convert to fraction form
    14,787.24/20,406.18 = 9,119.70/x
  3. Step 3: Cross multiply
    14,787.24x = 20,406.18 × 9,119.70
  4. Step 4: Simplify right side
    14,787.24x = 186,098,239.75
  5. Step 5: Solve for x
    x = 186,098,239.75/14,787.24
  6. Step 6: Final answer
    x = 12,585.06

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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.