Home / 20,333.17-30,479.29-9,787.78

Finding the Fourth Proportional to 20,333.17, 30,479.29 and 9,787.78

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Solution

The fourth proportional to 20,333.17, 30,479.29 and 9,787.78 is: 14,671.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333.17 : 30,479.29 = 9,787.78 : x
  2. Step 2: Convert to fraction form
    20,333.17/30,479.29 = 9,787.78/x
  3. Step 3: Cross multiply
    20,333.17x = 30,479.29 × 9,787.78
  4. Step 4: Simplify right side
    20,333.17x = 298,324,585.08
  5. Step 5: Solve for x
    x = 298,324,585.08/20,333.17
  6. Step 6: Final answer
    x = 14,671.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.