Home / 15,404.32-21,257.87-8,330.72

Finding the Fourth Proportional to 15,404.32, 21,257.87 and 8,330.72

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Solution

The fourth proportional to 15,404.32, 21,257.87 and 8,330.72 is: 11,496.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,404.32 : 21,257.87 = 8,330.72 : x
  2. Step 2: Convert to fraction form
    15,404.32/21,257.87 = 8,330.72/x
  3. Step 3: Cross multiply
    15,404.32x = 21,257.87 × 8,330.72
  4. Step 4: Simplify right side
    15,404.32x = 177,093,374.26
  5. Step 5: Solve for x
    x = 177,093,374.26/15,404.32
  6. Step 6: Final answer
    x = 11,496.35

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.