Home / 21,704.40-29,952.18-12,751.92

Finding the Fourth Proportional to 21,704.40, 29,952.18 and 12,751.92

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Solution

The fourth proportional to 21,704.40, 29,952.18 and 12,751.92 is: 17,597.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,704.40 : 29,952.18 = 12,751.92 : x
  2. Step 2: Convert to fraction form
    21,704.40/29,952.18 = 12,751.92/x
  3. Step 3: Cross multiply
    21,704.40x = 29,952.18 × 12,751.92
  4. Step 4: Simplify right side
    21,704.40x = 381,947,803.19
  5. Step 5: Solve for x
    x = 381,947,803.19/21,704.40
  6. Step 6: Final answer
    x = 17,597.71

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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.