Home / 25,578.45-38,195.08-20,907.59

Finding the Fourth Proportional to 25,578.45, 38,195.08 and 20,907.59

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Solution

The fourth proportional to 25,578.45, 38,195.08 and 20,907.59 is: 31,220.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,578.45 : 38,195.08 = 20,907.59 : x
  2. Step 2: Convert to fraction form
    25,578.45/38,195.08 = 20,907.59/x
  3. Step 3: Cross multiply
    25,578.45x = 38,195.08 × 20,907.59
  4. Step 4: Simplify right side
    25,578.45x = 798,566,829.41
  5. Step 5: Solve for x
    x = 798,566,829.41/25,578.45
  6. Step 6: Final answer
    x = 31,220.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.