Home / 20,548.75-28,357.24-11,117.31

Finding the Fourth Proportional to 20,548.75, 28,357.24 and 11,117.31

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Solution

The fourth proportional to 20,548.75, 28,357.24 and 11,117.31 is: 15,341.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548.75 : 28,357.24 = 11,117.31 : x
  2. Step 2: Convert to fraction form
    20,548.75/28,357.24 = 11,117.31/x
  3. Step 3: Cross multiply
    20,548.75x = 28,357.24 × 11,117.31
  4. Step 4: Simplify right side
    20,548.75x = 315,256,227.82
  5. Step 5: Solve for x
    x = 315,256,227.82/20,548.75
  6. Step 6: Final answer
    x = 15,341.87

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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.