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Finding the Fourth Proportional to 15,596.80, 21,521.09 and 8,882.55

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Solution

The fourth proportional to 15,596.80, 21,521.09 and 8,882.55 is: 12,256.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,596.80 : 21,521.09 = 8,882.55 : x
  2. Step 2: Convert to fraction form
    15,596.80/21,521.09 = 8,882.55/x
  3. Step 3: Cross multiply
    15,596.80x = 21,521.09 × 8,882.55
  4. Step 4: Simplify right side
    15,596.80x = 191,162,180.19
  5. Step 5: Solve for x
    x = 191,162,180.19/15,596.80
  6. Step 6: Final answer
    x = 12,256.50

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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.