Home / 20,135.83-30,199.64-7,651.48

Finding the Fourth Proportional to 20,135.83, 30,199.64 and 7,651.48

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Solution

The fourth proportional to 20,135.83, 30,199.64 and 7,651.48 is: 11,475.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.83 : 30,199.64 = 7,651.48 : x
  2. Step 2: Convert to fraction form
    20,135.83/30,199.64 = 7,651.48/x
  3. Step 3: Cross multiply
    20,135.83x = 30,199.64 × 7,651.48
  4. Step 4: Simplify right side
    20,135.83x = 231,071,941.47
  5. Step 5: Solve for x
    x = 231,071,941.47/20,135.83
  6. Step 6: Final answer
    x = 11,475.66

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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.