Home / 13,213.13-19,780.61-11,572.88

Finding the Fourth Proportional to 13,213.13, 19,780.61 and 11,572.88

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Solution

The fourth proportional to 13,213.13, 19,780.61 and 11,572.88 is: 17,325.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.13 : 19,780.61 = 11,572.88 : x
  2. Step 2: Convert to fraction form
    13,213.13/19,780.61 = 11,572.88/x
  3. Step 3: Cross multiply
    13,213.13x = 19,780.61 × 11,572.88
  4. Step 4: Simplify right side
    13,213.13x = 228,918,469.09
  5. Step 5: Solve for x
    x = 228,918,469.09/13,213.13
  6. Step 6: Final answer
    x = 17,325.08

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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.