Home / 18,407.72-25,404.42-11,338.28

Finding the Fourth Proportional to 18,407.72, 25,404.42 and 11,338.28

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Solution

The fourth proportional to 18,407.72, 25,404.42 and 11,338.28 is: 15,647.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,407.72 : 25,404.42 = 11,338.28 : x
  2. Step 2: Convert to fraction form
    18,407.72/25,404.42 = 11,338.28/x
  3. Step 3: Cross multiply
    18,407.72x = 25,404.42 × 11,338.28
  4. Step 4: Simplify right side
    18,407.72x = 288,042,427.20
  5. Step 5: Solve for x
    x = 288,042,427.20/18,407.72
  6. Step 6: Final answer
    x = 15,647.91

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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.