Home / 13,220.64-19,836.15-5,819.91

Finding the Fourth Proportional to 13,220.64, 19,836.15 and 5,819.91

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Solution

The fourth proportional to 13,220.64, 19,836.15 and 5,819.91 is: 8,732.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.64 : 19,836.15 = 5,819.91 : x
  2. Step 2: Convert to fraction form
    13,220.64/19,836.15 = 5,819.91/x
  3. Step 3: Cross multiply
    13,220.64x = 19,836.15 × 5,819.91
  4. Step 4: Simplify right side
    13,220.64x = 115,444,607.75
  5. Step 5: Solve for x
    x = 115,444,607.75/13,220.64
  6. Step 6: Final answer
    x = 8,732.15

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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.