Home / 12,505.87-17,257.80-6,840.66

Finding the Fourth Proportional to 12,505.87, 17,257.80 and 6,840.66

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Solution

The fourth proportional to 12,505.87, 17,257.80 and 6,840.66 is: 9,439.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.87 : 17,257.80 = 6,840.66 : x
  2. Step 2: Convert to fraction form
    12,505.87/17,257.80 = 6,840.66/x
  3. Step 3: Cross multiply
    12,505.87x = 17,257.80 × 6,840.66
  4. Step 4: Simplify right side
    12,505.87x = 118,054,742.15
  5. Step 5: Solve for x
    x = 118,054,742.15/12,505.87
  6. Step 6: Final answer
    x = 9,439.95

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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.