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Finding the Fourth Proportional to 15,195.50, 20,970.84 and 8,482.43

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Solution

The fourth proportional to 15,195.50, 20,970.84 and 8,482.43 is: 11,706.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,195.50 : 20,970.84 = 8,482.43 : x
  2. Step 2: Convert to fraction form
    15,195.50/20,970.84 = 8,482.43/x
  3. Step 3: Cross multiply
    15,195.50x = 20,970.84 × 8,482.43
  4. Step 4: Simplify right side
    15,195.50x = 177,883,639.93
  5. Step 5: Solve for x
    x = 177,883,639.93/15,195.50
  6. Step 6: Final answer
    x = 11,706.34

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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.