Home / 13,332.21-20,003.18-7,784.52

Finding the Fourth Proportional to 13,332.21, 20,003.18 and 7,784.52

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Solution

The fourth proportional to 13,332.21, 20,003.18 and 7,784.52 is: 11,679.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,332.21 : 20,003.18 = 7,784.52 : x
  2. Step 2: Convert to fraction form
    13,332.21/20,003.18 = 7,784.52/x
  3. Step 3: Cross multiply
    13,332.21x = 20,003.18 × 7,784.52
  4. Step 4: Simplify right side
    13,332.21x = 155,715,115.85
  5. Step 5: Solve for x
    x = 155,715,115.85/13,332.21
  6. Step 6: Final answer
    x = 11,679.62

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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.