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Finding the Fourth Proportional to 12,482.95, 17,229.36 and 7,180.84

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Solution

The fourth proportional to 12,482.95, 17,229.36 and 7,180.84 is: 9,911.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482.95 : 17,229.36 = 7,180.84 : x
  2. Step 2: Convert to fraction form
    12,482.95/17,229.36 = 7,180.84/x
  3. Step 3: Cross multiply
    12,482.95x = 17,229.36 × 7,180.84
  4. Step 4: Simplify right side
    12,482.95x = 123,721,277.46
  5. Step 5: Solve for x
    x = 123,721,277.46/12,482.95
  6. Step 6: Final answer
    x = 9,911.22

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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.