Home / 20,475.68-30,722.16-10,087.52

Finding the Fourth Proportional to 20,475.68, 30,722.16 and 10,087.52

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Solution

The fourth proportional to 20,475.68, 30,722.16 and 10,087.52 is: 15,135.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,475.68 : 30,722.16 = 10,087.52 : x
  2. Step 2: Convert to fraction form
    20,475.68/30,722.16 = 10,087.52/x
  3. Step 3: Cross multiply
    20,475.68x = 30,722.16 × 10,087.52
  4. Step 4: Simplify right side
    20,475.68x = 309,910,403.44
  5. Step 5: Solve for x
    x = 309,910,403.44/20,475.68
  6. Step 6: Final answer
    x = 15,135.54

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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.