Home / 15,882.98-21,918.38-8,712.76

Finding the Fourth Proportional to 15,882.98, 21,918.38 and 8,712.76

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Solution

The fourth proportional to 15,882.98, 21,918.38 and 8,712.76 is: 12,023.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,882.98 : 21,918.38 = 8,712.76 : x
  2. Step 2: Convert to fraction form
    15,882.98/21,918.38 = 8,712.76/x
  3. Step 3: Cross multiply
    15,882.98x = 21,918.38 × 8,712.76
  4. Step 4: Simplify right side
    15,882.98x = 190,969,584.53
  5. Step 5: Solve for x
    x = 190,969,584.53/15,882.98
  6. Step 6: Final answer
    x = 12,023.54

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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.