Home / 12,498.18-18,708.66-6,861.75

Finding the Fourth Proportional to 12,498.18, 18,708.66 and 6,861.75

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Solution

The fourth proportional to 12,498.18, 18,708.66 and 6,861.75 is: 10,271.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,498.18 : 18,708.66 = 6,861.75 : x
  2. Step 2: Convert to fraction form
    12,498.18/18,708.66 = 6,861.75/x
  3. Step 3: Cross multiply
    12,498.18x = 18,708.66 × 6,861.75
  4. Step 4: Simplify right side
    12,498.18x = 128,374,147.76
  5. Step 5: Solve for x
    x = 128,374,147.76/12,498.18
  6. Step 6: Final answer
    x = 10,271.43

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1.5x scale

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.