Home / 12,108.76-18,165.30-4,717.24

Finding the Fourth Proportional to 12,108.76, 18,165.30 and 4,717.24

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Solution

The fourth proportional to 12,108.76, 18,165.30 and 4,717.24 is: 7,076.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.76 : 18,165.30 = 4,717.24 : x
  2. Step 2: Convert to fraction form
    12,108.76/18,165.30 = 4,717.24/x
  3. Step 3: Cross multiply
    12,108.76x = 18,165.30 × 4,717.24
  4. Step 4: Simplify right side
    12,108.76x = 85,690,079.77
  5. Step 5: Solve for x
    x = 85,690,079.77/12,108.76
  6. Step 6: Final answer
    x = 7,076.70

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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.