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Finding the Fourth Proportional to 18,011.80, 24,856.06 and 9,945.52

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Solution

The fourth proportional to 18,011.80, 24,856.06 and 9,945.52 is: 13,724.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,011.80 : 24,856.06 = 9,945.52 : x
  2. Step 2: Convert to fraction form
    18,011.80/24,856.06 = 9,945.52/x
  3. Step 3: Cross multiply
    18,011.80x = 24,856.06 × 9,945.52
  4. Step 4: Simplify right side
    18,011.80x = 247,206,441.85
  5. Step 5: Solve for x
    x = 247,206,441.85/18,011.80
  6. Step 6: Final answer
    x = 13,724.69

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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.