Home / 12,217.16-16,860-6,911.72

Finding the Fourth Proportional to 12,217.16, 16,860 and 6,911.72

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Solution

The fourth proportional to 12,217.16, 16,860 and 6,911.72 is: 9,538.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,217.16 : 16,860 = 6,911.72 : x
  2. Step 2: Convert to fraction form
    12,217.16/16,860 = 6,911.72/x
  3. Step 3: Cross multiply
    12,217.16x = 16,860 × 6,911.72
  4. Step 4: Simplify right side
    12,217.16x = 116,531,599.20
  5. Step 5: Solve for x
    x = 116,531,599.20/12,217.16
  6. Step 6: Final answer
    x = 9,538.35

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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.