Home / 15,833.92-21,851.28-8,761.12

Finding the Fourth Proportional to 15,833.92, 21,851.28 and 8,761.12

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Solution

The fourth proportional to 15,833.92, 21,851.28 and 8,761.12 is: 12,090.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,833.92 : 21,851.28 = 8,761.12 : x
  2. Step 2: Convert to fraction form
    15,833.92/21,851.28 = 8,761.12/x
  3. Step 3: Cross multiply
    15,833.92x = 21,851.28 × 8,761.12
  4. Step 4: Simplify right side
    15,833.92x = 191,441,686.23
  5. Step 5: Solve for x
    x = 191,441,686.23/15,833.92
  6. Step 6: Final answer
    x = 12,090.61

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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.