Home / 25,756.80-38,639.55-7,983.38

Finding the Fourth Proportional to 25,756.80, 38,639.55 and 7,983.38

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Solution

The fourth proportional to 25,756.80, 38,639.55 and 7,983.38 is: 11,976.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,756.80 : 38,639.55 = 7,983.38 : x
  2. Step 2: Convert to fraction form
    25,756.80/38,639.55 = 7,983.38/x
  3. Step 3: Cross multiply
    25,756.80x = 38,639.55 × 7,983.38
  4. Step 4: Simplify right side
    25,756.80x = 308,474,017.48
  5. Step 5: Solve for x
    x = 308,474,017.48/25,756.80
  6. Step 6: Final answer
    x = 11,976.41

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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.