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Finding the Fourth Proportional to 15,963.50, 22,019.07 and 9,984.79

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Solution

The fourth proportional to 15,963.50, 22,019.07 and 9,984.79 is: 13,772.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,963.50 : 22,019.07 = 9,984.79 : x
  2. Step 2: Convert to fraction form
    15,963.50/22,019.07 = 9,984.79/x
  3. Step 3: Cross multiply
    15,963.50x = 22,019.07 × 9,984.79
  4. Step 4: Simplify right side
    15,963.50x = 219,855,789.95
  5. Step 5: Solve for x
    x = 219,855,789.95/15,963.50
  6. Step 6: Final answer
    x = 13,772.41

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Similar ratio
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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.