Home / 10,462.40-15,679.20-7,380.80

Finding the Fourth Proportional to 10,462.40, 15,679.20 and 7,380.80

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Solution

The fourth proportional to 10,462.40, 15,679.20 and 7,380.80 is: 11,061.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,462.40 : 15,679.20 = 7,380.80 : x
  2. Step 2: Convert to fraction form
    10,462.40/15,679.20 = 7,380.80/x
  3. Step 3: Cross multiply
    10,462.40x = 15,679.20 × 7,380.80
  4. Step 4: Simplify right side
    10,462.40x = 115,725,039.36
  5. Step 5: Solve for x
    x = 115,725,039.36/10,462.40
  6. Step 6: Final answer
    x = 11,061.04

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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.