Home / 19,787.11-29,680.42-7,946.13

Finding the Fourth Proportional to 19,787.11, 29,680.42 and 7,946.13

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Solution

The fourth proportional to 19,787.11, 29,680.42 and 7,946.13 is: 11,919.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,787.11 : 29,680.42 = 7,946.13 : x
  2. Step 2: Convert to fraction form
    19,787.11/29,680.42 = 7,946.13/x
  3. Step 3: Cross multiply
    19,787.11x = 29,680.42 × 7,946.13
  4. Step 4: Simplify right side
    19,787.11x = 235,844,475.77
  5. Step 5: Solve for x
    x = 235,844,475.77/19,787.11
  6. Step 6: Final answer
    x = 11,919.10

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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.