Home / 10,545.50-15,820.90-3,149.93

Finding the Fourth Proportional to 10,545.50, 15,820.90 and 3,149.93

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Solution

The fourth proportional to 10,545.50, 15,820.90 and 3,149.93 is: 4,725.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,545.50 : 15,820.90 = 3,149.93 : x
  2. Step 2: Convert to fraction form
    10,545.50/15,820.90 = 3,149.93/x
  3. Step 3: Cross multiply
    10,545.50x = 15,820.90 × 3,149.93
  4. Step 4: Simplify right side
    10,545.50x = 49,834,711.79
  5. Step 5: Solve for x
    x = 49,834,711.79/10,545.50
  6. Step 6: Final answer
    x = 4,725.69

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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.