Home / 13,395.11-18,486.30-7,427.95

Finding the Fourth Proportional to 13,395.11, 18,486.30 and 7,427.95

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Solution

The fourth proportional to 13,395.11, 18,486.30 and 7,427.95 is: 10,251.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.11 : 18,486.30 = 7,427.95 : x
  2. Step 2: Convert to fraction form
    13,395.11/18,486.30 = 7,427.95/x
  3. Step 3: Cross multiply
    13,395.11x = 18,486.30 × 7,427.95
  4. Step 4: Simplify right side
    13,395.11x = 137,315,312.09
  5. Step 5: Solve for x
    x = 137,315,312.09/13,395.11
  6. Step 6: Final answer
    x = 10,251.15

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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.