Home / 20,037.60-29,998.80-12,261.60

Finding the Fourth Proportional to 20,037.60, 29,998.80 and 12,261.60

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Solution

The fourth proportional to 20,037.60, 29,998.80 and 12,261.60 is: 18,357.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,037.60 : 29,998.80 = 12,261.60 : x
  2. Step 2: Convert to fraction form
    20,037.60/29,998.80 = 12,261.60/x
  3. Step 3: Cross multiply
    20,037.60x = 29,998.80 × 12,261.60
  4. Step 4: Simplify right side
    20,037.60x = 367,833,286.08
  5. Step 5: Solve for x
    x = 367,833,286.08/20,037.60
  6. Step 6: Final answer
    x = 18,357.15

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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.