Home / 20,680.06-28,511.85-15,023.02

Finding the Fourth Proportional to 20,680.06, 28,511.85 and 15,023.02

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Solution

The fourth proportional to 20,680.06, 28,511.85 and 15,023.02 is: 20,712.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.06 : 28,511.85 = 15,023.02 : x
  2. Step 2: Convert to fraction form
    20,680.06/28,511.85 = 15,023.02/x
  3. Step 3: Cross multiply
    20,680.06x = 28,511.85 × 15,023.02
  4. Step 4: Simplify right side
    20,680.06x = 428,334,092.79
  5. Step 5: Solve for x
    x = 428,334,092.79/20,680.06
  6. Step 6: Final answer
    x = 20,712.42

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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.