Home / 20,282.11-28,002.15-13,919.35

Finding the Fourth Proportional to 20,282.11, 28,002.15 and 13,919.35

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Solution

The fourth proportional to 20,282.11, 28,002.15 and 13,919.35 is: 19,217.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,282.11 : 28,002.15 = 13,919.35 : x
  2. Step 2: Convert to fraction form
    20,282.11/28,002.15 = 13,919.35/x
  3. Step 3: Cross multiply
    20,282.11x = 28,002.15 × 13,919.35
  4. Step 4: Simplify right side
    20,282.11x = 389,771,726.60
  5. Step 5: Solve for x
    x = 389,771,726.60/20,282.11
  6. Step 6: Final answer
    x = 19,217.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.