Home / 12,475.66-17,218.62-7,440.20

Finding the Fourth Proportional to 12,475.66, 17,218.62 and 7,440.20

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Solution

The fourth proportional to 12,475.66, 17,218.62 and 7,440.20 is: 10,268.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,475.66 : 17,218.62 = 7,440.20 : x
  2. Step 2: Convert to fraction form
    12,475.66/17,218.62 = 7,440.20/x
  3. Step 3: Cross multiply
    12,475.66x = 17,218.62 × 7,440.20
  4. Step 4: Simplify right side
    12,475.66x = 128,109,976.52
  5. Step 5: Solve for x
    x = 128,109,976.52/12,475.66
  6. Step 6: Final answer
    x = 10,268.79

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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.