Home / 9,104.38-12,557.49-6,421.12

Finding the Fourth Proportional to 9,104.38, 12,557.49 and 6,421.12

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Solution

The fourth proportional to 9,104.38, 12,557.49 and 6,421.12 is: 8,856.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,104.38 : 12,557.49 = 6,421.12 : x
  2. Step 2: Convert to fraction form
    9,104.38/12,557.49 = 6,421.12/x
  3. Step 3: Cross multiply
    9,104.38x = 12,557.49 × 6,421.12
  4. Step 4: Simplify right side
    9,104.38x = 80,633,150.19
  5. Step 5: Solve for x
    x = 80,633,150.19/9,104.38
  6. Step 6: Final answer
    x = 8,856.52

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Half scale
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Double scale
Find fourth proportional to 9,105.38, 12,558.87 and 6,422.12
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.