Home / 25,584.20-38,376.30-20,918.60

Finding the Fourth Proportional to 25,584.20, 38,376.30 and 20,918.60

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Solution

The fourth proportional to 25,584.20, 38,376.30 and 20,918.60 is: 31,377.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,584.20 : 38,376.30 = 20,918.60 : x
  2. Step 2: Convert to fraction form
    25,584.20/38,376.30 = 20,918.60/x
  3. Step 3: Cross multiply
    25,584.20x = 38,376.30 × 20,918.60
  4. Step 4: Simplify right side
    25,584.20x = 802,778,469.18
  5. Step 5: Solve for x
    x = 802,778,469.18/25,584.20
  6. Step 6: Final answer
    x = 31,377.90

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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.