Home / 11,415.12-15,753.21-6,379.17

Finding the Fourth Proportional to 11,415.12, 15,753.21 and 6,379.17

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Solution

The fourth proportional to 11,415.12, 15,753.21 and 6,379.17 is: 8,803.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,415.12 : 15,753.21 = 6,379.17 : x
  2. Step 2: Convert to fraction form
    11,415.12/15,753.21 = 6,379.17/x
  3. Step 3: Cross multiply
    11,415.12x = 15,753.21 × 6,379.17
  4. Step 4: Simplify right side
    11,415.12x = 100,492,404.64
  5. Step 5: Solve for x
    x = 100,492,404.64/11,415.12
  6. Step 6: Final answer
    x = 8,803.45

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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.