Home / 20,352.20-28,086.32-11,854.10

Finding the Fourth Proportional to 20,352.20, 28,086.32 and 11,854.10

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Solution

The fourth proportional to 20,352.20, 28,086.32 and 11,854.10 is: 16,358.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,352.20 : 28,086.32 = 11,854.10 : x
  2. Step 2: Convert to fraction form
    20,352.20/28,086.32 = 11,854.10/x
  3. Step 3: Cross multiply
    20,352.20x = 28,086.32 × 11,854.10
  4. Step 4: Simplify right side
    20,352.20x = 332,937,846.21
  5. Step 5: Solve for x
    x = 332,937,846.21/20,352.20
  6. Step 6: Final answer
    x = 16,358.82

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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.