Home / 20,099.97-30,145.85-7,615.69

Finding the Fourth Proportional to 20,099.97, 30,145.85 and 7,615.69

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Solution

The fourth proportional to 20,099.97, 30,145.85 and 7,615.69 is: 11,421.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.97 : 30,145.85 = 7,615.69 : x
  2. Step 2: Convert to fraction form
    20,099.97/30,145.85 = 7,615.69/x
  3. Step 3: Cross multiply
    20,099.97x = 30,145.85 × 7,615.69
  4. Step 4: Simplify right side
    20,099.97x = 229,581,448.39
  5. Step 5: Solve for x
    x = 229,581,448.39/20,099.97
  6. Step 6: Final answer
    x = 11,421.98

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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.