Home / 13,422.60-20,137.38-5,102.76

Finding the Fourth Proportional to 13,422.60, 20,137.38 and 5,102.76

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Solution

The fourth proportional to 13,422.60, 20,137.38 and 5,102.76 is: 7,655.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.60 : 20,137.38 = 5,102.76 : x
  2. Step 2: Convert to fraction form
    13,422.60/20,137.38 = 5,102.76/x
  3. Step 3: Cross multiply
    13,422.60x = 20,137.38 × 5,102.76
  4. Step 4: Simplify right side
    13,422.60x = 102,756,217.17
  5. Step 5: Solve for x
    x = 102,756,217.17/13,422.60
  6. Step 6: Final answer
    x = 7,655.46

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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.