Home / 20,309.98-30,465.59-5,519.21

Finding the Fourth Proportional to 20,309.98, 30,465.59 and 5,519.21

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Solution

The fourth proportional to 20,309.98, 30,465.59 and 5,519.21 is: 8,278.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.98 : 30,465.59 = 5,519.21 : x
  2. Step 2: Convert to fraction form
    20,309.98/30,465.59 = 5,519.21/x
  3. Step 3: Cross multiply
    20,309.98x = 30,465.59 × 5,519.21
  4. Step 4: Simplify right side
    20,309.98x = 168,145,885.22
  5. Step 5: Solve for x
    x = 168,145,885.22/20,309.98
  6. Step 6: Final answer
    x = 8,278.98

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Similar ratio
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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.