Home / 10,531.16-15,775.55-4,989.85

Finding the Fourth Proportional to 10,531.16, 15,775.55 and 4,989.85

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Solution

The fourth proportional to 10,531.16, 15,775.55 and 4,989.85 is: 7,474.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,531.16 : 15,775.55 = 4,989.85 : x
  2. Step 2: Convert to fraction form
    10,531.16/15,775.55 = 4,989.85/x
  3. Step 3: Cross multiply
    10,531.16x = 15,775.55 × 4,989.85
  4. Step 4: Simplify right side
    10,531.16x = 78,717,543.56
  5. Step 5: Solve for x
    x = 78,717,543.56/10,531.16
  6. Step 6: Final answer
    x = 7,474.73

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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.