Home / 22,920.48-31,629.36-12,984.48

Finding the Fourth Proportional to 22,920.48, 31,629.36 and 12,984.48

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Solution

The fourth proportional to 22,920.48, 31,629.36 and 12,984.48 is: 17,918.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,920.48 : 31,629.36 = 12,984.48 : x
  2. Step 2: Convert to fraction form
    22,920.48/31,629.36 = 12,984.48/x
  3. Step 3: Cross multiply
    22,920.48x = 31,629.36 × 12,984.48
  4. Step 4: Simplify right side
    22,920.48x = 410,690,792.33
  5. Step 5: Solve for x
    x = 410,690,792.33/22,920.48
  6. Step 6: Final answer
    x = 17,918.07

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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.