Home / 15,404.34-21,257.94-8,330.76

Finding the Fourth Proportional to 15,404.34, 21,257.94 and 8,330.76

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Solution

The fourth proportional to 15,404.34, 21,257.94 and 8,330.76 is: 11,496.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,404.34 : 21,257.94 = 8,330.76 : x
  2. Step 2: Convert to fraction form
    15,404.34/21,257.94 = 8,330.76/x
  3. Step 3: Cross multiply
    15,404.34x = 21,257.94 × 8,330.76
  4. Step 4: Simplify right side
    15,404.34x = 177,094,796.23
  5. Step 5: Solve for x
    x = 177,094,796.23/15,404.34
  6. Step 6: Final answer
    x = 11,496.42

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Half scale
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Double scale
Find fourth proportional to 15,405.34, 21,259.32 and 8,331.76
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.