Home / 20,835.35-28,752.68-11,275.23

Finding the Fourth Proportional to 20,835.35, 28,752.68 and 11,275.23

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Solution

The fourth proportional to 20,835.35, 28,752.68 and 11,275.23 is: 15,559.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.35 : 28,752.68 = 11,275.23 : x
  2. Step 2: Convert to fraction form
    20,835.35/28,752.68 = 11,275.23/x
  3. Step 3: Cross multiply
    20,835.35x = 28,752.68 × 11,275.23
  4. Step 4: Simplify right side
    20,835.35x = 324,193,080.12
  5. Step 5: Solve for x
    x = 324,193,080.12/20,835.35
  6. Step 6: Final answer
    x = 15,559.76

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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.