Home / 20,333.45-28,060.16-11,380.95

Finding the Fourth Proportional to 20,333.45, 28,060.16 and 11,380.95

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Solution

The fourth proportional to 20,333.45, 28,060.16 and 11,380.95 is: 15,705.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333.45 : 28,060.16 = 11,380.95 : x
  2. Step 2: Convert to fraction form
    20,333.45/28,060.16 = 11,380.95/x
  3. Step 3: Cross multiply
    20,333.45x = 28,060.16 × 11,380.95
  4. Step 4: Simplify right side
    20,333.45x = 319,351,168.43
  5. Step 5: Solve for x
    x = 319,351,168.43/20,333.45
  6. Step 6: Final answer
    x = 15,705.70

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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.