Home / 20,835.66-28,752.99-11,275.34

Finding the Fourth Proportional to 20,835.66, 28,752.99 and 11,275.34

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Solution

The fourth proportional to 20,835.66, 28,752.99 and 11,275.34 is: 15,559.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.66 : 28,752.99 = 11,275.34 : x
  2. Step 2: Convert to fraction form
    20,835.66/28,752.99 = 11,275.34/x
  3. Step 3: Cross multiply
    20,835.66x = 28,752.99 × 11,275.34
  4. Step 4: Simplify right side
    20,835.66x = 324,199,760.73
  5. Step 5: Solve for x
    x = 324,199,760.73/20,835.66
  6. Step 6: Final answer
    x = 15,559.85

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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.