Home / 8,442.11-11,565.62-8,126.70

Finding the Fourth Proportional to 8,442.11, 11,565.62 and 8,126.70

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Solution

The fourth proportional to 8,442.11, 11,565.62 and 8,126.70 is: 11,133.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,442.11 : 11,565.62 = 8,126.70 : x
  2. Step 2: Convert to fraction form
    8,442.11/11,565.62 = 8,126.70/x
  3. Step 3: Cross multiply
    8,442.11x = 11,565.62 × 8,126.70
  4. Step 4: Simplify right side
    8,442.11x = 93,990,283.42
  5. Step 5: Solve for x
    x = 93,990,283.42/8,442.11
  6. Step 6: Final answer
    x = 11,133.51

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Half scale
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Double scale
Find fourth proportional to 8,443.11, 11,566.98 and 8,127.70
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.