Home / 38,515.12-57,774.72-12,221.92

Finding the Fourth Proportional to 38,515.12, 57,774.72 and 12,221.92

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Solution

The fourth proportional to 38,515.12, 57,774.72 and 12,221.92 is: 18,333.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,515.12 : 57,774.72 = 12,221.92 : x
  2. Step 2: Convert to fraction form
    38,515.12/57,774.72 = 12,221.92/x
  3. Step 3: Cross multiply
    38,515.12x = 57,774.72 × 12,221.92
  4. Step 4: Simplify right side
    38,515.12x = 706,118,005.86
  5. Step 5: Solve for x
    x = 706,118,005.86/38,515.12
  6. Step 6: Final answer
    x = 18,333.53

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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.