Home / 10,320.30-15,480.45-7,193.70

Finding the Fourth Proportional to 10,320.30, 15,480.45 and 7,193.70

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Solution

The fourth proportional to 10,320.30, 15,480.45 and 7,193.70 is: 10,790.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,320.30 : 15,480.45 = 7,193.70 : x
  2. Step 2: Convert to fraction form
    10,320.30/15,480.45 = 7,193.70/x
  3. Step 3: Cross multiply
    10,320.30x = 15,480.45 × 7,193.70
  4. Step 4: Simplify right side
    10,320.30x = 111,361,713.17
  5. Step 5: Solve for x
    x = 111,361,713.17/10,320.30
  6. Step 6: Final answer
    x = 10,790.55

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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.