Home / 10,218.69-15,318.45-3,982.70

Finding the Fourth Proportional to 10,218.69, 15,318.45 and 3,982.70

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Solution

The fourth proportional to 10,218.69, 15,318.45 and 3,982.70 is: 5,970.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,218.69 : 15,318.45 = 3,982.70 : x
  2. Step 2: Convert to fraction form
    10,218.69/15,318.45 = 3,982.70/x
  3. Step 3: Cross multiply
    10,218.69x = 15,318.45 × 3,982.70
  4. Step 4: Simplify right side
    10,218.69x = 61,008,829.11
  5. Step 5: Solve for x
    x = 61,008,829.11/10,218.69
  6. Step 6: Final answer
    x = 5,970.32

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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.