Home / 21,230.56-31,833.64-8,759.17

Finding the Fourth Proportional to 21,230.56, 31,833.64 and 8,759.17

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Solution

The fourth proportional to 21,230.56, 31,833.64 and 8,759.17 is: 13,133.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.56 : 31,833.64 = 8,759.17 : x
  2. Step 2: Convert to fraction form
    21,230.56/31,833.64 = 8,759.17/x
  3. Step 3: Cross multiply
    21,230.56x = 31,833.64 × 8,759.17
  4. Step 4: Simplify right side
    21,230.56x = 278,836,264.48
  5. Step 5: Solve for x
    x = 278,836,264.48/21,230.56
  6. Step 6: Final answer
    x = 13,133.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.