Home / 20,185.84-30,251.12-10,304.40

Finding the Fourth Proportional to 20,185.84, 30,251.12 and 10,304.40

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Solution

The fourth proportional to 20,185.84, 30,251.12 and 10,304.40 is: 15,442.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.84 : 30,251.12 = 10,304.40 : x
  2. Step 2: Convert to fraction form
    20,185.84/30,251.12 = 10,304.40/x
  3. Step 3: Cross multiply
    20,185.84x = 30,251.12 × 10,304.40
  4. Step 4: Simplify right side
    20,185.84x = 311,719,640.93
  5. Step 5: Solve for x
    x = 311,719,640.93/20,185.84
  6. Step 6: Final answer
    x = 15,442.49

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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.