Home / 20,420.10-30,610.70-6,559.38

Finding the Fourth Proportional to 20,420.10, 30,610.70 and 6,559.38

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Solution

The fourth proportional to 20,420.10, 30,610.70 and 6,559.38 is: 9,832.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,420.10 : 30,610.70 = 6,559.38 : x
  2. Step 2: Convert to fraction form
    20,420.10/30,610.70 = 6,559.38/x
  3. Step 3: Cross multiply
    20,420.10x = 30,610.70 × 6,559.38
  4. Step 4: Simplify right side
    20,420.10x = 200,787,060.31
  5. Step 5: Solve for x
    x = 200,787,060.31/20,420.10
  6. Step 6: Final answer
    x = 9,832.82

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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.