Home / 21,427.34-29,571.62-12,475.69

Finding the Fourth Proportional to 21,427.34, 29,571.62 and 12,475.69

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Solution

The fourth proportional to 21,427.34, 29,571.62 and 12,475.69 is: 17,217.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.34 : 29,571.62 = 12,475.69 : x
  2. Step 2: Convert to fraction form
    21,427.34/29,571.62 = 12,475.69/x
  3. Step 3: Cross multiply
    21,427.34x = 29,571.62 × 12,475.69
  4. Step 4: Simplify right side
    21,427.34x = 368,926,227.61
  5. Step 5: Solve for x
    x = 368,926,227.61/21,427.34
  6. Step 6: Final answer
    x = 17,217.55

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Half scale
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Double scale
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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.