Home / 10,513.76-15,770.16-3,939.39

Finding the Fourth Proportional to 10,513.76, 15,770.16 and 3,939.39

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Solution

The fourth proportional to 10,513.76, 15,770.16 and 3,939.39 is: 5,908.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,513.76 : 15,770.16 = 3,939.39 : x
  2. Step 2: Convert to fraction form
    10,513.76/15,770.16 = 3,939.39/x
  3. Step 3: Cross multiply
    10,513.76x = 15,770.16 × 3,939.39
  4. Step 4: Simplify right side
    10,513.76x = 62,124,810.60
  5. Step 5: Solve for x
    x = 62,124,810.60/10,513.76
  6. Step 6: Final answer
    x = 5,908.91

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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.