Home / 25,821.89-35,567.82-18,255.20

Finding the Fourth Proportional to 25,821.89, 35,567.82 and 18,255.20

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Solution

The fourth proportional to 25,821.89, 35,567.82 and 18,255.20 is: 25,145.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,821.89 : 35,567.82 = 18,255.20 : x
  2. Step 2: Convert to fraction form
    25,821.89/35,567.82 = 18,255.20/x
  3. Step 3: Cross multiply
    25,821.89x = 35,567.82 × 18,255.20
  4. Step 4: Simplify right side
    25,821.89x = 649,297,667.66
  5. Step 5: Solve for x
    x = 649,297,667.66/25,821.89
  6. Step 6: Final answer
    x = 25,145.24

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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.