Home / 13,000.80-19,501.20-8,007.15

Finding the Fourth Proportional to 13,000.80, 19,501.20 and 8,007.15

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Solution

The fourth proportional to 13,000.80, 19,501.20 and 8,007.15 is: 12,010.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,000.80 : 19,501.20 = 8,007.15 : x
  2. Step 2: Convert to fraction form
    13,000.80/19,501.20 = 8,007.15/x
  3. Step 3: Cross multiply
    13,000.80x = 19,501.20 × 8,007.15
  4. Step 4: Simplify right side
    13,000.80x = 156,149,033.58
  5. Step 5: Solve for x
    x = 156,149,033.58/13,000.80
  6. Step 6: Final answer
    x = 12,010.73

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Half scale
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Double scale
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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.