Home / 21,366.72-29,474.88-13,393.92

Finding the Fourth Proportional to 21,366.72, 29,474.88 and 13,393.92

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Solution

The fourth proportional to 21,366.72, 29,474.88 and 13,393.92 is: 18,476.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,366.72 : 29,474.88 = 13,393.92 : x
  2. Step 2: Convert to fraction form
    21,366.72/29,474.88 = 13,393.92/x
  3. Step 3: Cross multiply
    21,366.72x = 29,474.88 × 13,393.92
  4. Step 4: Simplify right side
    21,366.72x = 394,784,184.73
  5. Step 5: Solve for x
    x = 394,784,184.73/21,366.72
  6. Step 6: Final answer
    x = 18,476.59

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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.