Home / 12,400.40-18,600.80-3,635.08

Finding the Fourth Proportional to 12,400.40, 18,600.80 and 3,635.08

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Solution

The fourth proportional to 12,400.40, 18,600.80 and 3,635.08 is: 5,452.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,400.40 : 18,600.80 = 3,635.08 : x
  2. Step 2: Convert to fraction form
    12,400.40/18,600.80 = 3,635.08/x
  3. Step 3: Cross multiply
    12,400.40x = 18,600.80 × 3,635.08
  4. Step 4: Simplify right side
    12,400.40x = 67,615,396.06
  5. Step 5: Solve for x
    x = 67,615,396.06/12,400.40
  6. Step 6: Final answer
    x = 5,452.68

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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.