Home / 8,777.18-12,111.11-5,000.42

Finding the Fourth Proportional to 8,777.18, 12,111.11 and 5,000.42

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Solution

The fourth proportional to 8,777.18, 12,111.11 and 5,000.42 is: 6,899.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,777.18 : 12,111.11 = 5,000.42 : x
  2. Step 2: Convert to fraction form
    8,777.18/12,111.11 = 5,000.42/x
  3. Step 3: Cross multiply
    8,777.18x = 12,111.11 × 5,000.42
  4. Step 4: Simplify right side
    8,777.18x = 60,560,581.39
  5. Step 5: Solve for x
    x = 60,560,581.39/8,777.18
  6. Step 6: Final answer
    x = 6,899.78

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1.5x scale

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.