Home / 20,333.72-28,061.31-11,260.23

Finding the Fourth Proportional to 20,333.72, 28,061.31 and 11,260.23

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Solution

The fourth proportional to 20,333.72, 28,061.31 and 11,260.23 is: 15,539.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333.72 : 28,061.31 = 11,260.23 : x
  2. Step 2: Convert to fraction form
    20,333.72/28,061.31 = 11,260.23/x
  3. Step 3: Cross multiply
    20,333.72x = 28,061.31 × 11,260.23
  4. Step 4: Simplify right side
    20,333.72x = 315,976,804.70
  5. Step 5: Solve for x
    x = 315,976,804.70/20,333.72
  6. Step 6: Final answer
    x = 15,539.55

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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.