Home / 21,227.06-29,285.88-12,731.93

Finding the Fourth Proportional to 21,227.06, 29,285.88 and 12,731.93

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Solution

The fourth proportional to 21,227.06, 29,285.88 and 12,731.93 is: 17,565.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,227.06 : 29,285.88 = 12,731.93 : x
  2. Step 2: Convert to fraction form
    21,227.06/29,285.88 = 12,731.93/x
  3. Step 3: Cross multiply
    21,227.06x = 29,285.88 × 12,731.93
  4. Step 4: Simplify right side
    21,227.06x = 372,865,890.34
  5. Step 5: Solve for x
    x = 372,865,890.34/21,227.06
  6. Step 6: Final answer
    x = 17,565.59

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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.