Home / 20,694.72-28,558.56-11,263.20

Finding the Fourth Proportional to 20,694.72, 28,558.56 and 11,263.20

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Solution

The fourth proportional to 20,694.72, 28,558.56 and 11,263.20 is: 15,543.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.72 : 28,558.56 = 11,263.20 : x
  2. Step 2: Convert to fraction form
    20,694.72/28,558.56 = 11,263.20/x
  3. Step 3: Cross multiply
    20,694.72x = 28,558.56 × 11,263.20
  4. Step 4: Simplify right side
    20,694.72x = 321,660,772.99
  5. Step 5: Solve for x
    x = 321,660,772.99/20,694.72
  6. Step 6: Final answer
    x = 15,543.13

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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.