Home / 20,724.63-31,087.04-6,685.71

Finding the Fourth Proportional to 20,724.63, 31,087.04 and 6,685.71

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Solution

The fourth proportional to 20,724.63, 31,087.04 and 6,685.71 is: 10,028.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724.63 : 31,087.04 = 6,685.71 : x
  2. Step 2: Convert to fraction form
    20,724.63/31,087.04 = 6,685.71/x
  3. Step 3: Cross multiply
    20,724.63x = 31,087.04 × 6,685.71
  4. Step 4: Simplify right side
    20,724.63x = 207,838,934.20
  5. Step 5: Solve for x
    x = 207,838,934.20/20,724.63
  6. Step 6: Final answer
    x = 10,028.60

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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.