Home / 38,040.78-57,069.81-20,510.22

Finding the Fourth Proportional to 38,040.78, 57,069.81 and 20,510.22

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Solution

The fourth proportional to 38,040.78, 57,069.81 and 20,510.22 is: 30,769.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,040.78 : 57,069.81 = 20,510.22 : x
  2. Step 2: Convert to fraction form
    38,040.78/57,069.81 = 20,510.22/x
  3. Step 3: Cross multiply
    38,040.78x = 57,069.81 × 20,510.22
  4. Step 4: Simplify right side
    38,040.78x = 1,170,514,358.46
  5. Step 5: Solve for x
    x = 1,170,514,358.46/38,040.78
  6. Step 6: Final answer
    x = 30,769.99

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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.