Home / 15,135.46-20,872.28-10,099.89

Finding the Fourth Proportional to 15,135.46, 20,872.28 and 10,099.89

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Solution

The fourth proportional to 15,135.46, 20,872.28 and 10,099.89 is: 13,928.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,135.46 : 20,872.28 = 10,099.89 : x
  2. Step 2: Convert to fraction form
    15,135.46/20,872.28 = 10,099.89/x
  3. Step 3: Cross multiply
    15,135.46x = 20,872.28 × 10,099.89
  4. Step 4: Simplify right side
    15,135.46x = 210,807,757.30
  5. Step 5: Solve for x
    x = 210,807,757.30/15,135.46
  6. Step 6: Final answer
    x = 13,928.07

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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.