Home / 22,787.60-31,446.12-13,362.40

Finding the Fourth Proportional to 22,787.60, 31,446.12 and 13,362.40

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Solution

The fourth proportional to 22,787.60, 31,446.12 and 13,362.40 is: 18,439.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,787.60 : 31,446.12 = 13,362.40 : x
  2. Step 2: Convert to fraction form
    22,787.60/31,446.12 = 13,362.40/x
  3. Step 3: Cross multiply
    22,787.60x = 31,446.12 × 13,362.40
  4. Step 4: Simplify right side
    22,787.60x = 420,195,633.89
  5. Step 5: Solve for x
    x = 420,195,633.89/22,787.60
  6. Step 6: Final answer
    x = 18,439.66

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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.