Home / 10,513.85-15,770.83-3,118.36

Finding the Fourth Proportional to 10,513.85, 15,770.83 and 3,118.36

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Solution

The fourth proportional to 10,513.85, 15,770.83 and 3,118.36 is: 4,677.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,513.85 : 15,770.83 = 3,118.36 : x
  2. Step 2: Convert to fraction form
    10,513.85/15,770.83 = 3,118.36/x
  3. Step 3: Cross multiply
    10,513.85x = 15,770.83 × 3,118.36
  4. Step 4: Simplify right side
    10,513.85x = 49,179,143.20
  5. Step 5: Solve for x
    x = 49,179,143.20/10,513.85
  6. Step 6: Final answer
    x = 4,677.56

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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.