Home / 20,081.60-30,125.05-7,429.64

Finding the Fourth Proportional to 20,081.60, 30,125.05 and 7,429.64

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Solution

The fourth proportional to 20,081.60, 30,125.05 and 7,429.64 is: 11,145.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081.60 : 30,125.05 = 7,429.64 : x
  2. Step 2: Convert to fraction form
    20,081.60/30,125.05 = 7,429.64/x
  3. Step 3: Cross multiply
    20,081.60x = 30,125.05 × 7,429.64
  4. Step 4: Simplify right side
    20,081.60x = 223,818,239.33
  5. Step 5: Solve for x
    x = 223,818,239.33/20,081.60
  6. Step 6: Final answer
    x = 11,145.44

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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.