Home / 21,330.60-29,426.66-12,372.88

Finding the Fourth Proportional to 21,330.60, 29,426.66 and 12,372.88

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Solution

The fourth proportional to 21,330.60, 29,426.66 and 12,372.88 is: 17,069.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.60 : 29,426.66 = 12,372.88 : x
  2. Step 2: Convert to fraction form
    21,330.60/29,426.66 = 12,372.88/x
  3. Step 3: Cross multiply
    21,330.60x = 29,426.66 × 12,372.88
  4. Step 4: Simplify right side
    21,330.60x = 364,092,532.98
  5. Step 5: Solve for x
    x = 364,092,532.98/21,330.60
  6. Step 6: Final answer
    x = 17,069.02

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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.