Home / 28,322.52-39,086.46-15,747

Finding the Fourth Proportional to 28,322.52, 39,086.46 and 15,747

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Solution

The fourth proportional to 28,322.52, 39,086.46 and 15,747 is: 21,731.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,322.52 : 39,086.46 = 15,747 : x
  2. Step 2: Convert to fraction form
    28,322.52/39,086.46 = 15,747/x
  3. Step 3: Cross multiply
    28,322.52x = 39,086.46 × 15,747
  4. Step 4: Simplify right side
    28,322.52x = 615,494,485.62
  5. Step 5: Solve for x
    x = 615,494,485.62/28,322.52
  6. Step 6: Final answer
    x = 21,731.63

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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.