Home / 13,517.50-18,662.39-9,275.53

Finding the Fourth Proportional to 13,517.50, 18,662.39 and 9,275.53

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Solution

The fourth proportional to 13,517.50, 18,662.39 and 9,275.53 is: 12,805.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,517.50 : 18,662.39 = 9,275.53 : x
  2. Step 2: Convert to fraction form
    13,517.50/18,662.39 = 9,275.53/x
  3. Step 3: Cross multiply
    13,517.50x = 18,662.39 × 9,275.53
  4. Step 4: Simplify right side
    13,517.50x = 173,103,558.32
  5. Step 5: Solve for x
    x = 173,103,558.32/13,517.50
  6. Step 6: Final answer
    x = 12,805.89

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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.