Home / 14,278.70-21,442.57-8,764.43

Finding the Fourth Proportional to 14,278.70, 21,442.57 and 8,764.43

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Solution

The fourth proportional to 14,278.70, 21,442.57 and 8,764.43 is: 13,161.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.70 : 21,442.57 = 8,764.43 : x
  2. Step 2: Convert to fraction form
    14,278.70/21,442.57 = 8,764.43/x
  3. Step 3: Cross multiply
    14,278.70x = 21,442.57 × 8,764.43
  4. Step 4: Simplify right side
    14,278.70x = 187,931,774.66
  5. Step 5: Solve for x
    x = 187,931,774.66/14,278.70
  6. Step 6: Final answer
    x = 13,161.68

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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.