Home / 20,155.68-30,238.97-7,008.78

Finding the Fourth Proportional to 20,155.68, 30,238.97 and 7,008.78

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Solution

The fourth proportional to 20,155.68, 30,238.97 and 7,008.78 is: 10,515.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.68 : 30,238.97 = 7,008.78 : x
  2. Step 2: Convert to fraction form
    20,155.68/30,238.97 = 7,008.78/x
  3. Step 3: Cross multiply
    20,155.68x = 30,238.97 × 7,008.78
  4. Step 4: Simplify right side
    20,155.68x = 211,938,253.11
  5. Step 5: Solve for x
    x = 211,938,253.11/20,155.68
  6. Step 6: Final answer
    x = 10,515.06

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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.