Home / 13,709.59-18,918.09-8,043.75

Finding the Fourth Proportional to 13,709.59, 18,918.09 and 8,043.75

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Solution

The fourth proportional to 13,709.59, 18,918.09 and 8,043.75 is: 11,099.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,709.59 : 18,918.09 = 8,043.75 : x
  2. Step 2: Convert to fraction form
    13,709.59/18,918.09 = 8,043.75/x
  3. Step 3: Cross multiply
    13,709.59x = 18,918.09 × 8,043.75
  4. Step 4: Simplify right side
    13,709.59x = 152,172,386.44
  5. Step 5: Solve for x
    x = 152,172,386.44/13,709.59
  6. Step 6: Final answer
    x = 11,099.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.