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Finding the Fourth Proportional to 25,390.80, 37,999.80 and 22,280.40

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Solution

The fourth proportional to 25,390.80, 37,999.80 and 22,280.40 is: 33,344.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,390.80 : 37,999.80 = 22,280.40 : x
  2. Step 2: Convert to fraction form
    25,390.80/37,999.80 = 22,280.40/x
  3. Step 3: Cross multiply
    25,390.80x = 37,999.80 × 22,280.40
  4. Step 4: Simplify right side
    25,390.80x = 846,650,743.92
  5. Step 5: Solve for x
    x = 846,650,743.92/25,390.80
  6. Step 6: Final answer
    x = 33,344.78

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1.5x scale

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.