Home / 13,428.75-20,127.92-6,841.02

Finding the Fourth Proportional to 13,428.75, 20,127.92 and 6,841.02

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Solution

The fourth proportional to 13,428.75, 20,127.92 and 6,841.02 is: 10,253.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.75 : 20,127.92 = 6,841.02 : x
  2. Step 2: Convert to fraction form
    13,428.75/20,127.92 = 6,841.02/x
  3. Step 3: Cross multiply
    13,428.75x = 20,127.92 × 6,841.02
  4. Step 4: Simplify right side
    13,428.75x = 137,695,503.28
  5. Step 5: Solve for x
    x = 137,695,503.28/13,428.75
  6. Step 6: Final answer
    x = 10,253.78

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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.