Home / 20,867.46-31,291.44-12,104.88

Finding the Fourth Proportional to 20,867.46, 31,291.44 and 12,104.88

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Solution

The fourth proportional to 20,867.46, 31,291.44 and 12,104.88 is: 18,151.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.46 : 31,291.44 = 12,104.88 : x
  2. Step 2: Convert to fraction form
    20,867.46/31,291.44 = 12,104.88/x
  3. Step 3: Cross multiply
    20,867.46x = 31,291.44 × 12,104.88
  4. Step 4: Simplify right side
    20,867.46x = 378,779,126.23
  5. Step 5: Solve for x
    x = 378,779,126.23/20,867.46
  6. Step 6: Final answer
    x = 18,151.66

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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.