Home / 12,217.79-16,859.12-6,840.53

Finding the Fourth Proportional to 12,217.79, 16,859.12 and 6,840.53

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Solution

The fourth proportional to 12,217.79, 16,859.12 and 6,840.53 is: 9,439.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,217.79 : 16,859.12 = 6,840.53 : x
  2. Step 2: Convert to fraction form
    12,217.79/16,859.12 = 6,840.53/x
  3. Step 3: Cross multiply
    12,217.79x = 16,859.12 × 6,840.53
  4. Step 4: Simplify right side
    12,217.79x = 115,325,248.94
  5. Step 5: Solve for x
    x = 115,325,248.94/12,217.79
  6. Step 6: Final answer
    x = 9,439.13

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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.