Home / 22,427.20-33,640.80-15,515.20

Finding the Fourth Proportional to 22,427.20, 33,640.80 and 15,515.20

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Solution

The fourth proportional to 22,427.20, 33,640.80 and 15,515.20 is: 23,272.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,427.20 : 33,640.80 = 15,515.20 : x
  2. Step 2: Convert to fraction form
    22,427.20/33,640.80 = 15,515.20/x
  3. Step 3: Cross multiply
    22,427.20x = 33,640.80 × 15,515.20
  4. Step 4: Simplify right side
    22,427.20x = 521,943,740.16
  5. Step 5: Solve for x
    x = 521,943,740.16/22,427.20
  6. Step 6: Final answer
    x = 23,272.80

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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.