Home / 13,612.74-18,787.32-8,306.43

Finding the Fourth Proportional to 13,612.74, 18,787.32 and 8,306.43

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Solution

The fourth proportional to 13,612.74, 18,787.32 and 8,306.43 is: 11,463.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.74 : 18,787.32 = 8,306.43 : x
  2. Step 2: Convert to fraction form
    13,612.74/18,787.32 = 8,306.43/x
  3. Step 3: Cross multiply
    13,612.74x = 18,787.32 × 8,306.43
  4. Step 4: Simplify right side
    13,612.74x = 156,055,558.47
  5. Step 5: Solve for x
    x = 156,055,558.47/13,612.74
  6. Step 6: Final answer
    x = 11,463.93

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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.