Home / 13,403.04-20,121.84-7,251.36

Finding the Fourth Proportional to 13,403.04, 20,121.84 and 7,251.36

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Solution

The fourth proportional to 13,403.04, 20,121.84 and 7,251.36 is: 10,886.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.04 : 20,121.84 = 7,251.36 : x
  2. Step 2: Convert to fraction form
    13,403.04/20,121.84 = 7,251.36/x
  3. Step 3: Cross multiply
    13,403.04x = 20,121.84 × 7,251.36
  4. Step 4: Simplify right side
    13,403.04x = 145,910,705.70
  5. Step 5: Solve for x
    x = 145,910,705.70/13,403.04
  6. Step 6: Final answer
    x = 10,886.39

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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.