Home / 20,500.89-28,278.22-12,934.01

Finding the Fourth Proportional to 20,500.89, 28,278.22 and 12,934.01

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Solution

The fourth proportional to 20,500.89, 28,278.22 and 12,934.01 is: 17,840.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500.89 : 28,278.22 = 12,934.01 : x
  2. Step 2: Convert to fraction form
    20,500.89/28,278.22 = 12,934.01/x
  3. Step 3: Cross multiply
    20,500.89x = 28,278.22 × 12,934.01
  4. Step 4: Simplify right side
    20,500.89x = 365,750,780.26
  5. Step 5: Solve for x
    x = 365,750,780.26/20,500.89
  6. Step 6: Final answer
    x = 17,840.73

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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.