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Finding the Fourth Proportional to 13,207.59, 19,817.84 and 5,811.13

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Solution

The fourth proportional to 13,207.59, 19,817.84 and 5,811.13 is: 8,719.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.59 : 19,817.84 = 5,811.13 : x
  2. Step 2: Convert to fraction form
    13,207.59/19,817.84 = 5,811.13/x
  3. Step 3: Cross multiply
    13,207.59x = 19,817.84 × 5,811.13
  4. Step 4: Simplify right side
    13,207.59x = 115,164,044.56
  5. Step 5: Solve for x
    x = 115,164,044.56/13,207.59
  6. Step 6: Final answer
    x = 8,719.54

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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.