Home / 20,436.96-30,655.51-5,645.55

Finding the Fourth Proportional to 20,436.96, 30,655.51 and 5,645.55

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Solution

The fourth proportional to 20,436.96, 30,655.51 and 5,645.55 is: 8,468.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.96 : 30,655.51 = 5,645.55 : x
  2. Step 2: Convert to fraction form
    20,436.96/30,655.51 = 5,645.55/x
  3. Step 3: Cross multiply
    20,436.96x = 30,655.51 × 5,645.55
  4. Step 4: Simplify right side
    20,436.96x = 173,067,214.48
  5. Step 5: Solve for x
    x = 173,067,214.48/20,436.96
  6. Step 6: Final answer
    x = 8,468.34

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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.