Home / 21,648.48-29,874.60-12,220.08

Finding the Fourth Proportional to 21,648.48, 29,874.60 and 12,220.08

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Solution

The fourth proportional to 21,648.48, 29,874.60 and 12,220.08 is: 16,863.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,648.48 : 29,874.60 = 12,220.08 : x
  2. Step 2: Convert to fraction form
    21,648.48/29,874.60 = 12,220.08/x
  3. Step 3: Cross multiply
    21,648.48x = 29,874.60 × 12,220.08
  4. Step 4: Simplify right side
    21,648.48x = 365,070,001.97
  5. Step 5: Solve for x
    x = 365,070,001.97/21,648.48
  6. Step 6: Final answer
    x = 16,863.54

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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.