Home / 20,479.26-30,717.81-10,087.50

Finding the Fourth Proportional to 20,479.26, 30,717.81 and 10,087.50

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Solution

The fourth proportional to 20,479.26, 30,717.81 and 10,087.50 is: 15,130.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479.26 : 30,717.81 = 10,087.50 : x
  2. Step 2: Convert to fraction form
    20,479.26/30,717.81 = 10,087.50/x
  3. Step 3: Cross multiply
    20,479.26x = 30,717.81 × 10,087.50
  4. Step 4: Simplify right side
    20,479.26x = 309,865,908.38
  5. Step 5: Solve for x
    x = 309,865,908.38/20,479.26
  6. Step 6: Final answer
    x = 15,130.72

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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.