Home / 29,721.87-40,983.23-18,949.68

Finding the Fourth Proportional to 29,721.87, 40,983.23 and 18,949.68

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Solution

The fourth proportional to 29,721.87, 40,983.23 and 18,949.68 is: 26,129.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,721.87 : 40,983.23 = 18,949.68 : x
  2. Step 2: Convert to fraction form
    29,721.87/40,983.23 = 18,949.68/x
  3. Step 3: Cross multiply
    29,721.87x = 40,983.23 × 18,949.68
  4. Step 4: Simplify right side
    29,721.87x = 776,619,141.24
  5. Step 5: Solve for x
    x = 776,619,141.24/29,721.87
  6. Step 6: Final answer
    x = 26,129.55

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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.