Home / 10,513.82-15,770.12-3,939.46

Finding the Fourth Proportional to 10,513.82, 15,770.12 and 3,939.46

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Solution

The fourth proportional to 10,513.82, 15,770.12 and 3,939.46 is: 5,908.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,513.82 : 15,770.12 = 3,939.46 : x
  2. Step 2: Convert to fraction form
    10,513.82/15,770.12 = 3,939.46/x
  3. Step 3: Cross multiply
    10,513.82x = 15,770.12 × 3,939.46
  4. Step 4: Simplify right side
    10,513.82x = 62,125,697.81
  5. Step 5: Solve for x
    x = 62,125,697.81/10,513.82
  6. Step 6: Final answer
    x = 5,908.95

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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.