Home / 20,304.87-28,020.83-11,812.02

Finding the Fourth Proportional to 20,304.87, 28,020.83 and 11,812.02

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Solution

The fourth proportional to 20,304.87, 28,020.83 and 11,812.02 is: 16,300.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,304.87 : 28,020.83 = 11,812.02 : x
  2. Step 2: Convert to fraction form
    20,304.87/28,020.83 = 11,812.02/x
  3. Step 3: Cross multiply
    20,304.87x = 28,020.83 × 11,812.02
  4. Step 4: Simplify right side
    20,304.87x = 330,982,545.32
  5. Step 5: Solve for x
    x = 330,982,545.32/20,304.87
  6. Step 6: Final answer
    x = 16,300.65

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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.