Home / 12,115.24-16,720.36-6,809.94

Finding the Fourth Proportional to 12,115.24, 16,720.36 and 6,809.94

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Solution

The fourth proportional to 12,115.24, 16,720.36 and 6,809.94 is: 9,398.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.24 : 16,720.36 = 6,809.94 : x
  2. Step 2: Convert to fraction form
    12,115.24/16,720.36 = 6,809.94/x
  3. Step 3: Cross multiply
    12,115.24x = 16,720.36 × 6,809.94
  4. Step 4: Simplify right side
    12,115.24x = 113,864,631.35
  5. Step 5: Solve for x
    x = 113,864,631.35/12,115.24
  6. Step 6: Final answer
    x = 9,398.46

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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.