Home / 12,790.80-19,186.20-9,510.30

Finding the Fourth Proportional to 12,790.80, 19,186.20 and 9,510.30

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Solution

The fourth proportional to 12,790.80, 19,186.20 and 9,510.30 is: 14,265.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.80 : 19,186.20 = 9,510.30 : x
  2. Step 2: Convert to fraction form
    12,790.80/19,186.20 = 9,510.30/x
  3. Step 3: Cross multiply
    12,790.80x = 19,186.20 × 9,510.30
  4. Step 4: Simplify right side
    12,790.80x = 182,466,517.86
  5. Step 5: Solve for x
    x = 182,466,517.86/12,790.80
  6. Step 6: Final answer
    x = 14,265.45

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Similar ratio
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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.