Home / 13,853.40-20,780.10-3,465.15

Finding the Fourth Proportional to 13,853.40, 20,780.10 and 3,465.15

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Solution

The fourth proportional to 13,853.40, 20,780.10 and 3,465.15 is: 5,197.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,853.40 : 20,780.10 = 3,465.15 : x
  2. Step 2: Convert to fraction form
    13,853.40/20,780.10 = 3,465.15/x
  3. Step 3: Cross multiply
    13,853.40x = 20,780.10 × 3,465.15
  4. Step 4: Simplify right side
    13,853.40x = 72,006,163.52
  5. Step 5: Solve for x
    x = 72,006,163.52/13,853.40
  6. Step 6: Final answer
    x = 5,197.73

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Similar ratio
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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.