Home / 13,218.51-19,819.85-4,208.73

Finding the Fourth Proportional to 13,218.51, 19,819.85 and 4,208.73

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Solution

The fourth proportional to 13,218.51, 19,819.85 and 4,208.73 is: 6,310.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.51 : 19,819.85 = 4,208.73 : x
  2. Step 2: Convert to fraction form
    13,218.51/19,819.85 = 4,208.73/x
  3. Step 3: Cross multiply
    13,218.51x = 19,819.85 × 4,208.73
  4. Step 4: Simplify right side
    13,218.51x = 83,416,376.25
  5. Step 5: Solve for x
    x = 83,416,376.25/13,218.51
  6. Step 6: Final answer
    x = 6,310.57

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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.