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Finding the Fourth Proportional to 15,197.19, 20,972.15 and 8,482.82

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Solution

The fourth proportional to 15,197.19, 20,972.15 and 8,482.82 is: 11,706.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,197.19 : 20,972.15 = 8,482.82 : x
  2. Step 2: Convert to fraction form
    15,197.19/20,972.15 = 8,482.82/x
  3. Step 3: Cross multiply
    15,197.19x = 20,972.15 × 8,482.82
  4. Step 4: Simplify right side
    15,197.19x = 177,902,973.46
  5. Step 5: Solve for x
    x = 177,902,973.46/15,197.19
  6. Step 6: Final answer
    x = 11,706.31

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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.