Home / 12,427.85-17,127.62-11,638.71

Finding the Fourth Proportional to 12,427.85, 17,127.62 and 11,638.71

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Solution

The fourth proportional to 12,427.85, 17,127.62 and 11,638.71 is: 16,040.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,427.85 : 17,127.62 = 11,638.71 : x
  2. Step 2: Convert to fraction form
    12,427.85/17,127.62 = 11,638.71/x
  3. Step 3: Cross multiply
    12,427.85x = 17,127.62 × 11,638.71
  4. Step 4: Simplify right side
    12,427.85x = 199,343,387.62
  5. Step 5: Solve for x
    x = 199,343,387.62/12,427.85
  6. Step 6: Final answer
    x = 16,040.05

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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.