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Finding the Fourth Proportional to 26,879.68, 40,323.68 and 13,724.92

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Solution

The fourth proportional to 26,879.68, 40,323.68 and 13,724.92 is: 20,589.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,879.68 : 40,323.68 = 13,724.92 : x
  2. Step 2: Convert to fraction form
    26,879.68/40,323.68 = 13,724.92/x
  3. Step 3: Cross multiply
    26,879.68x = 40,323.68 × 13,724.92
  4. Step 4: Simplify right side
    26,879.68x = 553,439,282.11
  5. Step 5: Solve for x
    x = 553,439,282.11/26,879.68
  6. Step 6: Final answer
    x = 20,589.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.