Home / 13,902.12-20,857.09-5,587.98

Finding the Fourth Proportional to 13,902.12, 20,857.09 and 5,587.98

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Solution

The fourth proportional to 13,902.12, 20,857.09 and 5,587.98 is: 8,383.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,902.12 : 20,857.09 = 5,587.98 : x
  2. Step 2: Convert to fraction form
    13,902.12/20,857.09 = 5,587.98/x
  3. Step 3: Cross multiply
    13,902.12x = 20,857.09 × 5,587.98
  4. Step 4: Simplify right side
    13,902.12x = 116,549,001.78
  5. Step 5: Solve for x
    x = 116,549,001.78/13,902.12
  6. Step 6: Final answer
    x = 8,383.54

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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.