Home / 12,505.95-17,257.57-6,839.60

Finding the Fourth Proportional to 12,505.95, 17,257.57 and 6,839.60

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Solution

The fourth proportional to 12,505.95, 17,257.57 and 6,839.60 is: 9,438.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.95 : 17,257.57 = 6,839.60 : x
  2. Step 2: Convert to fraction form
    12,505.95/17,257.57 = 6,839.60/x
  3. Step 3: Cross multiply
    12,505.95x = 17,257.57 × 6,839.60
  4. Step 4: Simplify right side
    12,505.95x = 118,034,832.63
  5. Step 5: Solve for x
    x = 118,034,832.63/12,505.95
  6. Step 6: Final answer
    x = 9,438.29

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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.