Home / 13,620.36-20,416.77-5,295.18

Finding the Fourth Proportional to 13,620.36, 20,416.77 and 5,295.18

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Solution

The fourth proportional to 13,620.36, 20,416.77 and 5,295.18 is: 7,937.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.36 : 20,416.77 = 5,295.18 : x
  2. Step 2: Convert to fraction form
    13,620.36/20,416.77 = 5,295.18/x
  3. Step 3: Cross multiply
    13,620.36x = 20,416.77 × 5,295.18
  4. Step 4: Simplify right side
    13,620.36x = 108,110,472.17
  5. Step 5: Solve for x
    x = 108,110,472.17/13,620.36
  6. Step 6: Final answer
    x = 7,937.42

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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.