Home / 12,201.60-18,303.12-3,436.80

Finding the Fourth Proportional to 12,201.60, 18,303.12 and 3,436.80

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Solution

The fourth proportional to 12,201.60, 18,303.12 and 3,436.80 is: 5,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,201.60 : 18,303.12 = 3,436.80 : x
  2. Step 2: Convert to fraction form
    12,201.60/18,303.12 = 3,436.80/x
  3. Step 3: Cross multiply
    12,201.60x = 18,303.12 × 3,436.80
  4. Step 4: Simplify right side
    12,201.60x = 62,904,162.82
  5. Step 5: Solve for x
    x = 62,904,162.82/12,201.60
  6. Step 6: Final answer
    x = 5,155.40

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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.