Home / 20,514.18-28,307.46-12,015.90

Finding the Fourth Proportional to 20,514.18, 28,307.46 and 12,015.90

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Solution

The fourth proportional to 20,514.18, 28,307.46 and 12,015.90 is: 16,580.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,514.18 : 28,307.46 = 12,015.90 : x
  2. Step 2: Convert to fraction form
    20,514.18/28,307.46 = 12,015.90/x
  3. Step 3: Cross multiply
    20,514.18x = 28,307.46 × 12,015.90
  4. Step 4: Simplify right side
    20,514.18x = 340,139,608.61
  5. Step 5: Solve for x
    x = 340,139,608.61/20,514.18
  6. Step 6: Final answer
    x = 16,580.71

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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.