Home / 13,221.42-19,819.17-5,434.62

Finding the Fourth Proportional to 13,221.42, 19,819.17 and 5,434.62

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Solution

The fourth proportional to 13,221.42, 19,819.17 and 5,434.62 is: 8,146.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.42 : 19,819.17 = 5,434.62 : x
  2. Step 2: Convert to fraction form
    13,221.42/19,819.17 = 5,434.62/x
  3. Step 3: Cross multiply
    13,221.42x = 19,819.17 × 5,434.62
  4. Step 4: Simplify right side
    13,221.42x = 107,709,657.67
  5. Step 5: Solve for x
    x = 107,709,657.67/13,221.42
  6. Step 6: Final answer
    x = 8,146.60

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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.