Home / 13,427.47-20,139.78-3,567.74

Finding the Fourth Proportional to 13,427.47, 20,139.78 and 3,567.74

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Solution

The fourth proportional to 13,427.47, 20,139.78 and 3,567.74 is: 5,351.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.47 : 20,139.78 = 3,567.74 : x
  2. Step 2: Convert to fraction form
    13,427.47/20,139.78 = 3,567.74/x
  3. Step 3: Cross multiply
    13,427.47x = 20,139.78 × 3,567.74
  4. Step 4: Simplify right side
    13,427.47x = 71,853,498.70
  5. Step 5: Solve for x
    x = 71,853,498.70/13,427.47
  6. Step 6: Final answer
    x = 5,351.23

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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.