Home / 22,789.02-31,451.26-12,720.96

Finding the Fourth Proportional to 22,789.02, 31,451.26 and 12,720.96

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Solution

The fourth proportional to 22,789.02, 31,451.26 and 12,720.96 is: 17,556.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,789.02 : 31,451.26 = 12,720.96 : x
  2. Step 2: Convert to fraction form
    22,789.02/31,451.26 = 12,720.96/x
  3. Step 3: Cross multiply
    22,789.02x = 31,451.26 × 12,720.96
  4. Step 4: Simplify right side
    22,789.02x = 400,090,220.41
  5. Step 5: Solve for x
    x = 400,090,220.41/22,789.02
  6. Step 6: Final answer
    x = 17,556.27

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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.