Home / 25,802.20-38,645.70-19,939.80

Finding the Fourth Proportional to 25,802.20, 38,645.70 and 19,939.80

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Solution

The fourth proportional to 25,802.20, 38,645.70 and 19,939.80 is: 29,865.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,802.20 : 38,645.70 = 19,939.80 : x
  2. Step 2: Convert to fraction form
    25,802.20/38,645.70 = 19,939.80/x
  3. Step 3: Cross multiply
    25,802.20x = 38,645.70 × 19,939.80
  4. Step 4: Simplify right side
    25,802.20x = 770,587,528.86
  5. Step 5: Solve for x
    x = 770,587,528.86/25,802.20
  6. Step 6: Final answer
    x = 29,865.19

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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.