Home / 20,512.60-28,294.23-12,945.58

Finding the Fourth Proportional to 20,512.60, 28,294.23 and 12,945.58

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Solution

The fourth proportional to 20,512.60, 28,294.23 and 12,945.58 is: 17,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.60 : 28,294.23 = 12,945.58 : x
  2. Step 2: Convert to fraction form
    20,512.60/28,294.23 = 12,945.58/x
  3. Step 3: Cross multiply
    20,512.60x = 28,294.23 × 12,945.58
  4. Step 4: Simplify right side
    20,512.60x = 366,285,218.00
  5. Step 5: Solve for x
    x = 366,285,218.00/20,512.60
  6. Step 6: Final answer
    x = 17,856.60

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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.