Home / 12,436.28-17,161.02-7,129.88

Finding the Fourth Proportional to 12,436.28, 17,161.02 and 7,129.88

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Solution

The fourth proportional to 12,436.28, 17,161.02 and 7,129.88 is: 9,838.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,436.28 : 17,161.02 = 7,129.88 : x
  2. Step 2: Convert to fraction form
    12,436.28/17,161.02 = 7,129.88/x
  3. Step 3: Cross multiply
    12,436.28x = 17,161.02 × 7,129.88
  4. Step 4: Simplify right side
    12,436.28x = 122,356,013.28
  5. Step 5: Solve for x
    x = 122,356,013.28/12,436.28
  6. Step 6: Final answer
    x = 9,838.63

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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.