Home / 21,372.40-29,493.76-11,812.92

Finding the Fourth Proportional to 21,372.40, 29,493.76 and 11,812.92

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Solution

The fourth proportional to 21,372.40, 29,493.76 and 11,812.92 is: 16,301.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,372.40 : 29,493.76 = 11,812.92 : x
  2. Step 2: Convert to fraction form
    21,372.40/29,493.76 = 11,812.92/x
  3. Step 3: Cross multiply
    21,372.40x = 29,493.76 × 11,812.92
  4. Step 4: Simplify right side
    21,372.40x = 348,407,427.38
  5. Step 5: Solve for x
    x = 348,407,427.38/21,372.40
  6. Step 6: Final answer
    x = 16,301.75

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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.