Home / 23,012.40-34,432.20-20,938.80

Finding the Fourth Proportional to 23,012.40, 34,432.20 and 20,938.80

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Solution

The fourth proportional to 23,012.40, 34,432.20 and 20,938.80 is: 31,329.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,012.40 : 34,432.20 = 20,938.80 : x
  2. Step 2: Convert to fraction form
    23,012.40/34,432.20 = 20,938.80/x
  3. Step 3: Cross multiply
    23,012.40x = 34,432.20 × 20,938.80
  4. Step 4: Simplify right side
    23,012.40x = 720,968,949.36
  5. Step 5: Solve for x
    x = 720,968,949.36/23,012.40
  6. Step 6: Final answer
    x = 31,329.59

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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.