Home / 13,728.87-18,961.40-9,244.82

Finding the Fourth Proportional to 13,728.87, 18,961.40 and 9,244.82

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Solution

The fourth proportional to 13,728.87, 18,961.40 and 9,244.82 is: 12,768.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.87 : 18,961.40 = 9,244.82 : x
  2. Step 2: Convert to fraction form
    13,728.87/18,961.40 = 9,244.82/x
  3. Step 3: Cross multiply
    13,728.87x = 18,961.40 × 9,244.82
  4. Step 4: Simplify right side
    13,728.87x = 175,294,800.46
  5. Step 5: Solve for x
    x = 175,294,800.46/13,728.87
  6. Step 6: Final answer
    x = 12,768.33

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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.