Home / 26,905.16-40,378.79-18,643.16

Finding the Fourth Proportional to 26,905.16, 40,378.79 and 18,643.16

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Solution

The fourth proportional to 26,905.16, 40,378.79 and 18,643.16 is: 27,979.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,905.16 : 40,378.79 = 18,643.16 : x
  2. Step 2: Convert to fraction form
    26,905.16/40,378.79 = 18,643.16/x
  3. Step 3: Cross multiply
    26,905.16x = 40,378.79 × 18,643.16
  4. Step 4: Simplify right side
    26,905.16x = 752,787,947.47
  5. Step 5: Solve for x
    x = 752,787,947.47/26,905.16
  6. Step 6: Final answer
    x = 27,979.32

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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.