Home / 22,720.72-31,352.36-13,287.44

Finding the Fourth Proportional to 22,720.72, 31,352.36 and 13,287.44

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Solution

The fourth proportional to 22,720.72, 31,352.36 and 13,287.44 is: 18,335.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,720.72 : 31,352.36 = 13,287.44 : x
  2. Step 2: Convert to fraction form
    22,720.72/31,352.36 = 13,287.44/x
  3. Step 3: Cross multiply
    22,720.72x = 31,352.36 × 13,287.44
  4. Step 4: Simplify right side
    22,720.72x = 416,592,602.36
  5. Step 5: Solve for x
    x = 416,592,602.36/22,720.72
  6. Step 6: Final answer
    x = 18,335.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.