Home / 21,240.98-31,865.29-8,754.17

Finding the Fourth Proportional to 21,240.98, 31,865.29 and 8,754.17

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Solution

The fourth proportional to 21,240.98, 31,865.29 and 8,754.17 is: 13,132.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.98 : 31,865.29 = 8,754.17 : x
  2. Step 2: Convert to fraction form
    21,240.98/31,865.29 = 8,754.17/x
  3. Step 3: Cross multiply
    21,240.98x = 31,865.29 × 8,754.17
  4. Step 4: Simplify right side
    21,240.98x = 278,954,223.54
  5. Step 5: Solve for x
    x = 278,954,223.54/21,240.98
  6. Step 6: Final answer
    x = 13,132.84

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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.