Home / 20,147.81-30,213.18-9,605.64

Finding the Fourth Proportional to 20,147.81, 30,213.18 and 9,605.64

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Solution

The fourth proportional to 20,147.81, 30,213.18 and 9,605.64 is: 14,404.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.81 : 30,213.18 = 9,605.64 : x
  2. Step 2: Convert to fraction form
    20,147.81/30,213.18 = 9,605.64/x
  3. Step 3: Cross multiply
    20,147.81x = 30,213.18 × 9,605.64
  4. Step 4: Simplify right side
    20,147.81x = 290,216,846.67
  5. Step 5: Solve for x
    x = 290,216,846.67/20,147.81
  6. Step 6: Final answer
    x = 14,404.38

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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.