Home / 12,407.16-17,121.60-7,101.48

Finding the Fourth Proportional to 12,407.16, 17,121.60 and 7,101.48

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Solution

The fourth proportional to 12,407.16, 17,121.60 and 7,101.48 is: 9,799.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,407.16 : 17,121.60 = 7,101.48 : x
  2. Step 2: Convert to fraction form
    12,407.16/17,121.60 = 7,101.48/x
  3. Step 3: Cross multiply
    12,407.16x = 17,121.60 × 7,101.48
  4. Step 4: Simplify right side
    12,407.16x = 121,588,699.97
  5. Step 5: Solve for x
    x = 121,588,699.97/12,407.16
  6. Step 6: Final answer
    x = 9,799.88

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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.