Home / 20,390.49-30,580.19-5,595.90

Finding the Fourth Proportional to 20,390.49, 30,580.19 and 5,595.90

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Solution

The fourth proportional to 20,390.49, 30,580.19 and 5,595.90 is: 8,392.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390.49 : 30,580.19 = 5,595.90 : x
  2. Step 2: Convert to fraction form
    20,390.49/30,580.19 = 5,595.90/x
  3. Step 3: Cross multiply
    20,390.49x = 30,580.19 × 5,595.90
  4. Step 4: Simplify right side
    20,390.49x = 171,123,685.22
  5. Step 5: Solve for x
    x = 171,123,685.22/20,390.49
  6. Step 6: Final answer
    x = 8,392.33

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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.