Home / 10,367.86-15,540.75-7,072.78

Finding the Fourth Proportional to 10,367.86, 15,540.75 and 7,072.78

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Solution

The fourth proportional to 10,367.86, 15,540.75 and 7,072.78 is: 10,601.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,367.86 : 15,540.75 = 7,072.78 : x
  2. Step 2: Convert to fraction form
    10,367.86/15,540.75 = 7,072.78/x
  3. Step 3: Cross multiply
    10,367.86x = 15,540.75 × 7,072.78
  4. Step 4: Simplify right side
    10,367.86x = 109,916,305.79
  5. Step 5: Solve for x
    x = 109,916,305.79/10,367.86
  6. Step 6: Final answer
    x = 10,601.64

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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.