Home / 19,323.92-28,812.80-18,974

Finding the Fourth Proportional to 19,323.92, 28,812.80 and 18,974

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Solution

The fourth proportional to 19,323.92, 28,812.80 and 18,974 is: 28,291.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,323.92 : 28,812.80 = 18,974 : x
  2. Step 2: Convert to fraction form
    19,323.92/28,812.80 = 18,974/x
  3. Step 3: Cross multiply
    19,323.92x = 28,812.80 × 18,974
  4. Step 4: Simplify right side
    19,323.92x = 546,694,067.20
  5. Step 5: Solve for x
    x = 546,694,067.20/19,323.92
  6. Step 6: Final answer
    x = 28,291.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.