Home / 10,949.81-15,109.85-6,169.55

Finding the Fourth Proportional to 10,949.81, 15,109.85 and 6,169.55

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Solution

The fourth proportional to 10,949.81, 15,109.85 and 6,169.55 is: 8,513.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,949.81 : 15,109.85 = 6,169.55 : x
  2. Step 2: Convert to fraction form
    10,949.81/15,109.85 = 6,169.55/x
  3. Step 3: Cross multiply
    10,949.81x = 15,109.85 × 6,169.55
  4. Step 4: Simplify right side
    10,949.81x = 93,220,914.94
  5. Step 5: Solve for x
    x = 93,220,914.94/10,949.81
  6. Step 6: Final answer
    x = 8,513.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.