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Finding the Fourth Proportional to 15,566.46, 21,479.03 and 8,759.53

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Solution

The fourth proportional to 15,566.46, 21,479.03 and 8,759.53 is: 12,086.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,566.46 : 21,479.03 = 8,759.53 : x
  2. Step 2: Convert to fraction form
    15,566.46/21,479.03 = 8,759.53/x
  3. Step 3: Cross multiply
    15,566.46x = 21,479.03 × 8,759.53
  4. Step 4: Simplify right side
    15,566.46x = 188,146,207.66
  5. Step 5: Solve for x
    x = 188,146,207.66/15,566.46
  6. Step 6: Final answer
    x = 12,086.64

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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.