Home / 15,876.83-21,912.88-9,161.52

Finding the Fourth Proportional to 15,876.83, 21,912.88 and 9,161.52

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Solution

The fourth proportional to 15,876.83, 21,912.88 and 9,161.52 is: 12,644.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,876.83 : 21,912.88 = 9,161.52 : x
  2. Step 2: Convert to fraction form
    15,876.83/21,912.88 = 9,161.52/x
  3. Step 3: Cross multiply
    15,876.83x = 21,912.88 × 9,161.52
  4. Step 4: Simplify right side
    15,876.83x = 200,755,265.47
  5. Step 5: Solve for x
    x = 200,755,265.47/15,876.83
  6. Step 6: Final answer
    x = 12,644.55

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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.