Home / 20,551.56-28,358.10-12,481.02

Finding the Fourth Proportional to 20,551.56, 28,358.10 and 12,481.02

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Solution

The fourth proportional to 20,551.56, 28,358.10 and 12,481.02 is: 17,221.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551.56 : 28,358.10 = 12,481.02 : x
  2. Step 2: Convert to fraction form
    20,551.56/28,358.10 = 12,481.02/x
  3. Step 3: Cross multiply
    20,551.56x = 28,358.10 × 12,481.02
  4. Step 4: Simplify right side
    20,551.56x = 353,938,013.26
  5. Step 5: Solve for x
    x = 353,938,013.26/20,551.56
  6. Step 6: Final answer
    x = 17,221.96

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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.