Home / 10,436.45-15,656.40-5,171.71

Finding the Fourth Proportional to 10,436.45, 15,656.40 and 5,171.71

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Solution

The fourth proportional to 10,436.45, 15,656.40 and 5,171.71 is: 7,758.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,436.45 : 15,656.40 = 5,171.71 : x
  2. Step 2: Convert to fraction form
    10,436.45/15,656.40 = 5,171.71/x
  3. Step 3: Cross multiply
    10,436.45x = 15,656.40 × 5,171.71
  4. Step 4: Simplify right side
    10,436.45x = 80,970,334.59
  5. Step 5: Solve for x
    x = 80,970,334.59/10,436.45
  6. Step 6: Final answer
    x = 7,758.42

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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.