Home / 12,217.93-16,861.10-6,840.20

Finding the Fourth Proportional to 12,217.93, 16,861.10 and 6,840.20

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Solution

The fourth proportional to 12,217.93, 16,861.10 and 6,840.20 is: 9,439.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,217.93 : 16,861.10 = 6,840.20 : x
  2. Step 2: Convert to fraction form
    12,217.93/16,861.10 = 6,840.20/x
  3. Step 3: Cross multiply
    12,217.93x = 16,861.10 × 6,840.20
  4. Step 4: Simplify right side
    12,217.93x = 115,333,304.17
  5. Step 5: Solve for x
    x = 115,333,304.17/12,217.93
  6. Step 6: Final answer
    x = 9,439.68

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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.