Home / 13,427.19-20,148.03-7,891.35

Finding the Fourth Proportional to 13,427.19, 20,148.03 and 7,891.35

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Solution

The fourth proportional to 13,427.19, 20,148.03 and 7,891.35 is: 11,841.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.19 : 20,148.03 = 7,891.35 : x
  2. Step 2: Convert to fraction form
    13,427.19/20,148.03 = 7,891.35/x
  3. Step 3: Cross multiply
    13,427.19x = 20,148.03 × 7,891.35
  4. Step 4: Simplify right side
    13,427.19x = 158,995,156.54
  5. Step 5: Solve for x
    x = 158,995,156.54/13,427.19
  6. Step 6: Final answer
    x = 11,841.28

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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.