Home / 12,933.40-17,856.54-9,943.72

Finding the Fourth Proportional to 12,933.40, 17,856.54 and 9,943.72

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Solution

The fourth proportional to 12,933.40, 17,856.54 and 9,943.72 is: 13,728.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,933.40 : 17,856.54 = 9,943.72 : x
  2. Step 2: Convert to fraction form
    12,933.40/17,856.54 = 9,943.72/x
  3. Step 3: Cross multiply
    12,933.40x = 17,856.54 × 9,943.72
  4. Step 4: Simplify right side
    12,933.40x = 177,560,433.93
  5. Step 5: Solve for x
    x = 177,560,433.93/12,933.40
  6. Step 6: Final answer
    x = 13,728.83

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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.