Home / 38,130.76-57,231.90-20,614.36

Finding the Fourth Proportional to 38,130.76, 57,231.90 and 20,614.36

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Solution

The fourth proportional to 38,130.76, 57,231.90 and 20,614.36 is: 30,940.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,130.76 : 57,231.90 = 20,614.36 : x
  2. Step 2: Convert to fraction form
    38,130.76/57,231.90 = 20,614.36/x
  3. Step 3: Cross multiply
    38,130.76x = 57,231.90 × 20,614.36
  4. Step 4: Simplify right side
    38,130.76x = 1,179,798,990.08
  5. Step 5: Solve for x
    x = 1,179,798,990.08/38,130.76
  6. Step 6: Final answer
    x = 30,940.87

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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.