Home / 12,439.09-17,168.12-7,403.59

Finding the Fourth Proportional to 12,439.09, 17,168.12 and 7,403.59

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Solution

The fourth proportional to 12,439.09, 17,168.12 and 7,403.59 is: 10,218.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.09 : 17,168.12 = 7,403.59 : x
  2. Step 2: Convert to fraction form
    12,439.09/17,168.12 = 7,403.59/x
  3. Step 3: Cross multiply
    12,439.09x = 17,168.12 × 7,403.59
  4. Step 4: Simplify right side
    12,439.09x = 127,105,721.55
  5. Step 5: Solve for x
    x = 127,105,721.55/12,439.09
  6. Step 6: Final answer
    x = 10,218.25

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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.