Home / 13,730.27-18,947.79-7,761.96

Finding the Fourth Proportional to 13,730.27, 18,947.79 and 7,761.96

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Solution

The fourth proportional to 13,730.27, 18,947.79 and 7,761.96 is: 10,711.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.27 : 18,947.79 = 7,761.96 : x
  2. Step 2: Convert to fraction form
    13,730.27/18,947.79 = 7,761.96/x
  3. Step 3: Cross multiply
    13,730.27x = 18,947.79 × 7,761.96
  4. Step 4: Simplify right side
    13,730.27x = 147,071,988.07
  5. Step 5: Solve for x
    x = 147,071,988.07/13,730.27
  6. Step 6: Final answer
    x = 10,711.52

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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.