Home / 12,575.18-18,865.68-3,690.15

Finding the Fourth Proportional to 12,575.18, 18,865.68 and 3,690.15

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Solution

The fourth proportional to 12,575.18, 18,865.68 and 3,690.15 is: 5,536.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,575.18 : 18,865.68 = 3,690.15 : x
  2. Step 2: Convert to fraction form
    12,575.18/18,865.68 = 3,690.15/x
  3. Step 3: Cross multiply
    12,575.18x = 18,865.68 × 3,690.15
  4. Step 4: Simplify right side
    12,575.18x = 69,617,135.60
  5. Step 5: Solve for x
    x = 69,617,135.60/12,575.18
  6. Step 6: Final answer
    x = 5,536.07

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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.