Home / 10,121.52-15,171.84-4,578.72

Finding the Fourth Proportional to 10,121.52, 15,171.84 and 4,578.72

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Solution

The fourth proportional to 10,121.52, 15,171.84 and 4,578.72 is: 6,863.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.52 : 15,171.84 = 4,578.72 : x
  2. Step 2: Convert to fraction form
    10,121.52/15,171.84 = 4,578.72/x
  3. Step 3: Cross multiply
    10,121.52x = 15,171.84 × 4,578.72
  4. Step 4: Simplify right side
    10,121.52x = 69,467,607.24
  5. Step 5: Solve for x
    x = 69,467,607.24/10,121.52
  6. Step 6: Final answer
    x = 6,863.36

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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.