Home / 10,138.72-15,210.96-3,565.60

Finding the Fourth Proportional to 10,138.72, 15,210.96 and 3,565.60

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Solution

The fourth proportional to 10,138.72, 15,210.96 and 3,565.60 is: 5,349.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,138.72 : 15,210.96 = 3,565.60 : x
  2. Step 2: Convert to fraction form
    10,138.72/15,210.96 = 3,565.60/x
  3. Step 3: Cross multiply
    10,138.72x = 15,210.96 × 3,565.60
  4. Step 4: Simplify right side
    10,138.72x = 54,236,198.98
  5. Step 5: Solve for x
    x = 54,236,198.98/10,138.72
  6. Step 6: Final answer
    x = 5,349.41

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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.