Home / 12,486.04-17,231.54-7,180.74

Finding the Fourth Proportional to 12,486.04, 17,231.54 and 7,180.74

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Solution

The fourth proportional to 12,486.04, 17,231.54 and 7,180.74 is: 9,909.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.04 : 17,231.54 = 7,180.74 : x
  2. Step 2: Convert to fraction form
    12,486.04/17,231.54 = 7,180.74/x
  3. Step 3: Cross multiply
    12,486.04x = 17,231.54 × 7,180.74
  4. Step 4: Simplify right side
    12,486.04x = 123,735,208.54
  5. Step 5: Solve for x
    x = 123,735,208.54/12,486.04
  6. Step 6: Final answer
    x = 9,909.88

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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.