Home / 38,456.82-57,690.36-13,491

Finding the Fourth Proportional to 38,456.82, 57,690.36 and 13,491

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Solution

The fourth proportional to 38,456.82, 57,690.36 and 13,491 is: 20,238.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,456.82 : 57,690.36 = 13,491 : x
  2. Step 2: Convert to fraction form
    38,456.82/57,690.36 = 13,491/x
  3. Step 3: Cross multiply
    38,456.82x = 57,690.36 × 13,491
  4. Step 4: Simplify right side
    38,456.82x = 778,300,646.76
  5. Step 5: Solve for x
    x = 778,300,646.76/38,456.82
  6. Step 6: Final answer
    x = 20,238.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.