Home / 15,731.24-21,707.70-8,657.96

Finding the Fourth Proportional to 15,731.24, 21,707.70 and 8,657.96

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Solution

The fourth proportional to 15,731.24, 21,707.70 and 8,657.96 is: 11,947.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,731.24 : 21,707.70 = 8,657.96 : x
  2. Step 2: Convert to fraction form
    15,731.24/21,707.70 = 8,657.96/x
  3. Step 3: Cross multiply
    15,731.24x = 21,707.70 × 8,657.96
  4. Step 4: Simplify right side
    15,731.24x = 187,944,398.29
  5. Step 5: Solve for x
    x = 187,944,398.29/15,731.24
  6. Step 6: Final answer
    x = 11,947.21

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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.