Home / 20,314.91-28,034.43-11,817.20

Finding the Fourth Proportional to 20,314.91, 28,034.43 and 11,817.20

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Solution

The fourth proportional to 20,314.91, 28,034.43 and 11,817.20 is: 16,307.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,314.91 : 28,034.43 = 11,817.20 : x
  2. Step 2: Convert to fraction form
    20,314.91/28,034.43 = 11,817.20/x
  3. Step 3: Cross multiply
    20,314.91x = 28,034.43 × 11,817.20
  4. Step 4: Simplify right side
    20,314.91x = 331,288,466.20
  5. Step 5: Solve for x
    x = 331,288,466.20/20,314.91
  6. Step 6: Final answer
    x = 16,307.65

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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.