Home / 20,359.72-30,520.14-6,499.72

Finding the Fourth Proportional to 20,359.72, 30,520.14 and 6,499.72

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Solution

The fourth proportional to 20,359.72, 30,520.14 and 6,499.72 is: 9,743.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.72 : 30,520.14 = 6,499.72 : x
  2. Step 2: Convert to fraction form
    20,359.72/30,520.14 = 6,499.72/x
  3. Step 3: Cross multiply
    20,359.72x = 30,520.14 × 6,499.72
  4. Step 4: Simplify right side
    20,359.72x = 198,372,364.36
  5. Step 5: Solve for x
    x = 198,372,364.36/20,359.72
  6. Step 6: Final answer
    x = 9,743.37

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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.