Home / 20,580.90-30,886.97-13,558.52

Finding the Fourth Proportional to 20,580.90, 30,886.97 and 13,558.52

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Solution

The fourth proportional to 20,580.90, 30,886.97 and 13,558.52 is: 20,348.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.90 : 30,886.97 = 13,558.52 : x
  2. Step 2: Convert to fraction form
    20,580.90/30,886.97 = 13,558.52/x
  3. Step 3: Cross multiply
    20,580.90x = 30,886.97 × 13,558.52
  4. Step 4: Simplify right side
    20,580.90x = 418,781,600.48
  5. Step 5: Solve for x
    x = 418,781,600.48/20,580.90
  6. Step 6: Final answer
    x = 20,348.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.