Home / 20,399.76-30,603.96-6,558.48

Finding the Fourth Proportional to 20,399.76, 30,603.96 and 6,558.48

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Solution

The fourth proportional to 20,399.76, 30,603.96 and 6,558.48 is: 9,839.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,399.76 : 30,603.96 = 6,558.48 : x
  2. Step 2: Convert to fraction form
    20,399.76/30,603.96 = 6,558.48/x
  3. Step 3: Cross multiply
    20,399.76x = 30,603.96 × 6,558.48
  4. Step 4: Simplify right side
    20,399.76x = 200,715,459.58
  5. Step 5: Solve for x
    x = 200,715,459.58/20,399.76
  6. Step 6: Final answer
    x = 9,839.11

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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.