Home / 21,299.92-29,391.24-11,867.92

Finding the Fourth Proportional to 21,299.92, 29,391.24 and 11,867.92

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Solution

The fourth proportional to 21,299.92, 29,391.24 and 11,867.92 is: 16,376.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,299.92 : 29,391.24 = 11,867.92 : x
  2. Step 2: Convert to fraction form
    21,299.92/29,391.24 = 11,867.92/x
  3. Step 3: Cross multiply
    21,299.92x = 29,391.24 × 11,867.92
  4. Step 4: Simplify right side
    21,299.92x = 348,812,885.02
  5. Step 5: Solve for x
    x = 348,812,885.02/21,299.92
  6. Step 6: Final answer
    x = 16,376.25

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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.