Home / 11,415.57-15,753.37-6,379.72

Finding the Fourth Proportional to 11,415.57, 15,753.37 and 6,379.72

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Solution

The fourth proportional to 11,415.57, 15,753.37 and 6,379.72 is: 8,803.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,415.57 : 15,753.37 = 6,379.72 : x
  2. Step 2: Convert to fraction form
    11,415.57/15,753.37 = 6,379.72/x
  3. Step 3: Cross multiply
    11,415.57x = 15,753.37 × 6,379.72
  4. Step 4: Simplify right side
    11,415.57x = 100,502,089.66
  5. Step 5: Solve for x
    x = 100,502,089.66/11,415.57
  6. Step 6: Final answer
    x = 8,803.95

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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.