Home / 13,220.39-19,835.78-5,819.66

Finding the Fourth Proportional to 13,220.39, 19,835.78 and 5,819.66

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Solution

The fourth proportional to 13,220.39, 19,835.78 and 5,819.66 is: 8,731.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.39 : 19,835.78 = 5,819.66 : x
  2. Step 2: Convert to fraction form
    13,220.39/19,835.78 = 5,819.66/x
  3. Step 3: Cross multiply
    13,220.39x = 19,835.78 × 5,819.66
  4. Step 4: Simplify right side
    13,220.39x = 115,437,367.16
  5. Step 5: Solve for x
    x = 115,437,367.16/13,220.39
  6. Step 6: Final answer
    x = 8,731.77

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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.