Home / 12,112.29-18,170.06-4,318.47

Finding the Fourth Proportional to 12,112.29, 18,170.06 and 4,318.47

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Solution

The fourth proportional to 12,112.29, 18,170.06 and 4,318.47 is: 6,478.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.29 : 18,170.06 = 4,318.47 : x
  2. Step 2: Convert to fraction form
    12,112.29/18,170.06 = 4,318.47/x
  3. Step 3: Cross multiply
    12,112.29x = 18,170.06 × 4,318.47
  4. Step 4: Simplify right side
    12,112.29x = 78,466,837.42
  5. Step 5: Solve for x
    x = 78,466,837.42/12,112.29
  6. Step 6: Final answer
    x = 6,478.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.