Home / 10,370.12-15,545.10-5,160.20

Finding the Fourth Proportional to 10,370.12, 15,545.10 and 5,160.20

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Solution

The fourth proportional to 10,370.12, 15,545.10 and 5,160.20 is: 7,735.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,370.12 : 15,545.10 = 5,160.20 : x
  2. Step 2: Convert to fraction form
    10,370.12/15,545.10 = 5,160.20/x
  3. Step 3: Cross multiply
    10,370.12x = 15,545.10 × 5,160.20
  4. Step 4: Simplify right side
    10,370.12x = 80,215,825.02
  5. Step 5: Solve for x
    x = 80,215,825.02/10,370.12
  6. Step 6: Final answer
    x = 7,735.28

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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.