Home / 15,610.82-21,543.25-8,537.70

Finding the Fourth Proportional to 15,610.82, 21,543.25 and 8,537.70

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Solution

The fourth proportional to 15,610.82, 21,543.25 and 8,537.70 is: 11,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,610.82 : 21,543.25 = 8,537.70 : x
  2. Step 2: Convert to fraction form
    15,610.82/21,543.25 = 8,537.70/x
  3. Step 3: Cross multiply
    15,610.82x = 21,543.25 × 8,537.70
  4. Step 4: Simplify right side
    15,610.82x = 183,929,805.53
  5. Step 5: Solve for x
    x = 183,929,805.53/15,610.82
  6. Step 6: Final answer
    x = 11,782.20

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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.