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Finding the Fourth Proportional to 15,957.79, 22,016.05 and 9,239.75

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Solution

The fourth proportional to 15,957.79, 22,016.05 and 9,239.75 is: 12,747.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,957.79 : 22,016.05 = 9,239.75 : x
  2. Step 2: Convert to fraction form
    15,957.79/22,016.05 = 9,239.75/x
  3. Step 3: Cross multiply
    15,957.79x = 22,016.05 × 9,239.75
  4. Step 4: Simplify right side
    15,957.79x = 203,422,797.99
  5. Step 5: Solve for x
    x = 203,422,797.99/15,957.79
  6. Step 6: Final answer
    x = 12,747.55

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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.