Home / 20,064.90-30,115.85-10,211.25

Finding the Fourth Proportional to 20,064.90, 30,115.85 and 10,211.25

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Solution

The fourth proportional to 20,064.90, 30,115.85 and 10,211.25 is: 15,326.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,064.90 : 30,115.85 = 10,211.25 : x
  2. Step 2: Convert to fraction form
    20,064.90/30,115.85 = 10,211.25/x
  3. Step 3: Cross multiply
    20,064.90x = 30,115.85 × 10,211.25
  4. Step 4: Simplify right side
    20,064.90x = 307,520,422.26
  5. Step 5: Solve for x
    x = 307,520,422.26/20,064.90
  6. Step 6: Final answer
    x = 15,326.29

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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.