Home / 13,339.83-20,021.85-7,105.12

Finding the Fourth Proportional to 13,339.83, 20,021.85 and 7,105.12

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Solution

The fourth proportional to 13,339.83, 20,021.85 and 7,105.12 is: 10,664.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.83 : 20,021.85 = 7,105.12 : x
  2. Step 2: Convert to fraction form
    13,339.83/20,021.85 = 7,105.12/x
  3. Step 3: Cross multiply
    13,339.83x = 20,021.85 × 7,105.12
  4. Step 4: Simplify right side
    13,339.83x = 142,257,646.87
  5. Step 5: Solve for x
    x = 142,257,646.87/13,339.83
  6. Step 6: Final answer
    x = 10,664.13

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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.