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Finding the Fourth Proportional to 13,339.58, 20,003.09 and 7,794.53

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Solution

The fourth proportional to 13,339.58, 20,003.09 and 7,794.53 is: 11,688.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.58 : 20,003.09 = 7,794.53 : x
  2. Step 2: Convert to fraction form
    13,339.58/20,003.09 = 7,794.53/x
  3. Step 3: Cross multiply
    13,339.58x = 20,003.09 × 7,794.53
  4. Step 4: Simplify right side
    13,339.58x = 155,914,585.08
  5. Step 5: Solve for x
    x = 155,914,585.08/13,339.58
  6. Step 6: Final answer
    x = 11,688.12

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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.