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Finding the Fourth Proportional to 28,901.82, 43,352.31 and 9,180.06

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Solution

The fourth proportional to 28,901.82, 43,352.31 and 9,180.06 is: 13,769.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,901.82 : 43,352.31 = 9,180.06 : x
  2. Step 2: Convert to fraction form
    28,901.82/43,352.31 = 9,180.06/x
  3. Step 3: Cross multiply
    28,901.82x = 43,352.31 × 9,180.06
  4. Step 4: Simplify right side
    28,901.82x = 397,976,806.94
  5. Step 5: Solve for x
    x = 397,976,806.94/28,901.82
  6. Step 6: Final answer
    x = 13,769.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.