Home / 20,390.12-30,589.58-6,349.86

Finding the Fourth Proportional to 20,390.12, 30,589.58 and 6,349.86

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Solution

The fourth proportional to 20,390.12, 30,589.58 and 6,349.86 is: 9,526.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390.12 : 30,589.58 = 6,349.86 : x
  2. Step 2: Convert to fraction form
    20,390.12/30,589.58 = 6,349.86/x
  3. Step 3: Cross multiply
    20,390.12x = 30,589.58 × 6,349.86
  4. Step 4: Simplify right side
    20,390.12x = 194,239,550.46
  5. Step 5: Solve for x
    x = 194,239,550.46/20,390.12
  6. Step 6: Final answer
    x = 9,526.16

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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.