Home / 13,862.82-19,115.56-9,378.80

Finding the Fourth Proportional to 13,862.82, 19,115.56 and 9,378.80

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Solution

The fourth proportional to 13,862.82, 19,115.56 and 9,378.80 is: 12,932.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,862.82 : 19,115.56 = 9,378.80 : x
  2. Step 2: Convert to fraction form
    13,862.82/19,115.56 = 9,378.80/x
  3. Step 3: Cross multiply
    13,862.82x = 19,115.56 × 9,378.80
  4. Step 4: Simplify right side
    13,862.82x = 179,281,014.13
  5. Step 5: Solve for x
    x = 179,281,014.13/13,862.82
  6. Step 6: Final answer
    x = 12,932.51

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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.