Home / 13,787.33-20,691.45-10,099.13

Finding the Fourth Proportional to 13,787.33, 20,691.45 and 10,099.13

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Solution

The fourth proportional to 13,787.33, 20,691.45 and 10,099.13 is: 15,156.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.33 : 20,691.45 = 10,099.13 : x
  2. Step 2: Convert to fraction form
    13,787.33/20,691.45 = 10,099.13/x
  3. Step 3: Cross multiply
    13,787.33x = 20,691.45 × 10,099.13
  4. Step 4: Simplify right side
    13,787.33x = 208,965,539.98
  5. Step 5: Solve for x
    x = 208,965,539.98/13,787.33
  6. Step 6: Final answer
    x = 15,156.35

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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.