Home / 11,415.12-15,752.84-6,379.34

Finding the Fourth Proportional to 11,415.12, 15,752.84 and 6,379.34

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Solution

The fourth proportional to 11,415.12, 15,752.84 and 6,379.34 is: 8,803.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,415.12 : 15,752.84 = 6,379.34 : x
  2. Step 2: Convert to fraction form
    11,415.12/15,752.84 = 6,379.34/x
  3. Step 3: Cross multiply
    11,415.12x = 15,752.84 × 6,379.34
  4. Step 4: Simplify right side
    11,415.12x = 100,492,722.33
  5. Step 5: Solve for x
    x = 100,492,722.33/11,415.12
  6. Step 6: Final answer
    x = 8,803.47

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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.