Home / 20,311.16-28,026.72-11,358.32

Finding the Fourth Proportional to 20,311.16, 28,026.72 and 11,358.32

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Solution

The fourth proportional to 20,311.16, 28,026.72 and 11,358.32 is: 15,672.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,311.16 : 28,026.72 = 11,358.32 : x
  2. Step 2: Convert to fraction form
    20,311.16/28,026.72 = 11,358.32/x
  3. Step 3: Cross multiply
    20,311.16x = 28,026.72 × 11,358.32
  4. Step 4: Simplify right side
    20,311.16x = 318,336,454.31
  5. Step 5: Solve for x
    x = 318,336,454.31/20,311.16
  6. Step 6: Final answer
    x = 15,672.98

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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.