Home / 20,333.70-28,061.04-11,382.72

Finding the Fourth Proportional to 20,333.70, 28,061.04 and 11,382.72

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Solution

The fourth proportional to 20,333.70, 28,061.04 and 11,382.72 is: 15,708.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333.70 : 28,061.04 = 11,382.72 : x
  2. Step 2: Convert to fraction form
    20,333.70/28,061.04 = 11,382.72/x
  3. Step 3: Cross multiply
    20,333.70x = 28,061.04 × 11,382.72
  4. Step 4: Simplify right side
    20,333.70x = 319,410,961.23
  5. Step 5: Solve for x
    x = 319,410,961.23/20,333.70
  6. Step 6: Final answer
    x = 15,708.45

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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.