Home / 28,365.92-39,198.92-21,280.04

Finding the Fourth Proportional to 28,365.92, 39,198.92 and 21,280.04

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Solution

The fourth proportional to 28,365.92, 39,198.92 and 21,280.04 is: 29,406.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,365.92 : 39,198.92 = 21,280.04 : x
  2. Step 2: Convert to fraction form
    28,365.92/39,198.92 = 21,280.04/x
  3. Step 3: Cross multiply
    28,365.92x = 39,198.92 × 21,280.04
  4. Step 4: Simplify right side
    28,365.92x = 834,154,585.56
  5. Step 5: Solve for x
    x = 834,154,585.56/28,365.92
  6. Step 6: Final answer
    x = 29,406.93

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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.