Home / 12,518.74-18,778.11-5,025.70

Finding the Fourth Proportional to 12,518.74, 18,778.11 and 5,025.70

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Solution

The fourth proportional to 12,518.74, 18,778.11 and 5,025.70 is: 7,538.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518.74 : 18,778.11 = 5,025.70 : x
  2. Step 2: Convert to fraction form
    12,518.74/18,778.11 = 5,025.70/x
  3. Step 3: Cross multiply
    12,518.74x = 18,778.11 × 5,025.70
  4. Step 4: Simplify right side
    12,518.74x = 94,373,147.43
  5. Step 5: Solve for x
    x = 94,373,147.43/12,518.74
  6. Step 6: Final answer
    x = 7,538.55

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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.