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Finding the Fourth Proportional to 15,988.55, 22,063.95 and 9,275.31

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Solution

The fourth proportional to 15,988.55, 22,063.95 and 9,275.31 is: 12,799.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,988.55 : 22,063.95 = 9,275.31 : x
  2. Step 2: Convert to fraction form
    15,988.55/22,063.95 = 9,275.31/x
  3. Step 3: Cross multiply
    15,988.55x = 22,063.95 × 9,275.31
  4. Step 4: Simplify right side
    15,988.55x = 204,649,976.07
  5. Step 5: Solve for x
    x = 204,649,976.07/15,988.55
  6. Step 6: Final answer
    x = 12,799.79

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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.