Home / 15,731.82-21,710.31-8,562.20

Finding the Fourth Proportional to 15,731.82, 21,710.31 and 8,562.20

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Solution

The fourth proportional to 15,731.82, 21,710.31 and 8,562.20 is: 11,816.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,731.82 : 21,710.31 = 8,562.20 : x
  2. Step 2: Convert to fraction form
    15,731.82/21,710.31 = 8,562.20/x
  3. Step 3: Cross multiply
    15,731.82x = 21,710.31 × 8,562.20
  4. Step 4: Simplify right side
    15,731.82x = 185,888,016.28
  5. Step 5: Solve for x
    x = 185,888,016.28/15,731.82
  6. Step 6: Final answer
    x = 11,816.06

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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.