Home / 11,395.55-15,725.81-6,359.78

Finding the Fourth Proportional to 11,395.55, 15,725.81 and 6,359.78

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Solution

The fourth proportional to 11,395.55, 15,725.81 and 6,359.78 is: 8,776.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,395.55 : 15,725.81 = 6,359.78 : x
  2. Step 2: Convert to fraction form
    11,395.55/15,725.81 = 6,359.78/x
  3. Step 3: Cross multiply
    11,395.55x = 15,725.81 × 6,359.78
  4. Step 4: Simplify right side
    11,395.55x = 100,012,691.92
  5. Step 5: Solve for x
    x = 100,012,691.92/11,395.55
  6. Step 6: Final answer
    x = 8,776.47

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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.