Home / 20,139.99-30,207.66-5,350.10

Finding the Fourth Proportional to 20,139.99, 30,207.66 and 5,350.10

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Solution

The fourth proportional to 20,139.99, 30,207.66 and 5,350.10 is: 8,024.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.99 : 30,207.66 = 5,350.10 : x
  2. Step 2: Convert to fraction form
    20,139.99/30,207.66 = 5,350.10/x
  3. Step 3: Cross multiply
    20,139.99x = 30,207.66 × 5,350.10
  4. Step 4: Simplify right side
    20,139.99x = 161,613,830.66
  5. Step 5: Solve for x
    x = 161,613,830.66/20,139.99
  6. Step 6: Final answer
    x = 8,024.53

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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.