Home / 22,451.36-30,982.56-13,020.80

Finding the Fourth Proportional to 22,451.36, 30,982.56 and 13,020.80

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Solution

The fourth proportional to 22,451.36, 30,982.56 and 13,020.80 is: 17,968.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,451.36 : 30,982.56 = 13,020.80 : x
  2. Step 2: Convert to fraction form
    22,451.36/30,982.56 = 13,020.80/x
  3. Step 3: Cross multiply
    22,451.36x = 30,982.56 × 13,020.80
  4. Step 4: Simplify right side
    22,451.36x = 403,417,717.25
  5. Step 5: Solve for x
    x = 403,417,717.25/22,451.36
  6. Step 6: Final answer
    x = 17,968.52

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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.