Home / 12,188.08-18,278.37-5,167.96

Finding the Fourth Proportional to 12,188.08, 18,278.37 and 5,167.96

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Solution

The fourth proportional to 12,188.08, 18,278.37 and 5,167.96 is: 7,750.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.08 : 18,278.37 = 5,167.96 : x
  2. Step 2: Convert to fraction form
    12,188.08/18,278.37 = 5,167.96/x
  3. Step 3: Cross multiply
    12,188.08x = 18,278.37 × 5,167.96
  4. Step 4: Simplify right side
    12,188.08x = 94,461,839.33
  5. Step 5: Solve for x
    x = 94,461,839.33/12,188.08
  6. Step 6: Final answer
    x = 7,750.35

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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.