Home / 28,322.25-39,084.84-15,747

Finding the Fourth Proportional to 28,322.25, 39,084.84 and 15,747

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Solution

The fourth proportional to 28,322.25, 39,084.84 and 15,747 is: 21,730.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,322.25 : 39,084.84 = 15,747 : x
  2. Step 2: Convert to fraction form
    28,322.25/39,084.84 = 15,747/x
  3. Step 3: Cross multiply
    28,322.25x = 39,084.84 × 15,747
  4. Step 4: Simplify right side
    28,322.25x = 615,468,975.48
  5. Step 5: Solve for x
    x = 615,468,975.48/28,322.25
  6. Step 6: Final answer
    x = 21,730.94

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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.