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Finding the Fourth Proportional to 15,965.01, 22,031.46 and 8,891.55

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Solution

The fourth proportional to 15,965.01, 22,031.46 and 8,891.55 is: 12,270.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,965.01 : 22,031.46 = 8,891.55 : x
  2. Step 2: Convert to fraction form
    15,965.01/22,031.46 = 8,891.55/x
  3. Step 3: Cross multiply
    15,965.01x = 22,031.46 × 8,891.55
  4. Step 4: Simplify right side
    15,965.01x = 195,893,828.16
  5. Step 5: Solve for x
    x = 195,893,828.16/15,965.01
  6. Step 6: Final answer
    x = 12,270.20

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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.