Home / 30,202.61-41,656.50-20,519.55

Finding the Fourth Proportional to 30,202.61, 41,656.50 and 20,519.55

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Solution

The fourth proportional to 30,202.61, 41,656.50 and 20,519.55 is: 28,301.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,202.61 : 41,656.50 = 20,519.55 : x
  2. Step 2: Convert to fraction form
    30,202.61/41,656.50 = 20,519.55/x
  3. Step 3: Cross multiply
    30,202.61x = 41,656.50 × 20,519.55
  4. Step 4: Simplify right side
    30,202.61x = 854,772,634.58
  5. Step 5: Solve for x
    x = 854,772,634.58/30,202.61
  6. Step 6: Final answer
    x = 28,301.29

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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.