Home / 12,290.28-18,438.49-5,266.82

Finding the Fourth Proportional to 12,290.28, 18,438.49 and 5,266.82

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Solution

The fourth proportional to 12,290.28, 18,438.49 and 5,266.82 is: 7,901.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.28 : 18,438.49 = 5,266.82 : x
  2. Step 2: Convert to fraction form
    12,290.28/18,438.49 = 5,266.82/x
  3. Step 3: Cross multiply
    12,290.28x = 18,438.49 × 5,266.82
  4. Step 4: Simplify right side
    12,290.28x = 97,112,230.96
  5. Step 5: Solve for x
    x = 97,112,230.96/12,290.28
  6. Step 6: Final answer
    x = 7,901.55

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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.