Home / 26,581.40-39,866.60-11,780.87

Finding the Fourth Proportional to 26,581.40, 39,866.60 and 11,780.87

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Solution

The fourth proportional to 26,581.40, 39,866.60 and 11,780.87 is: 17,668.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,581.40 : 39,866.60 = 11,780.87 : x
  2. Step 2: Convert to fraction form
    26,581.40/39,866.60 = 11,780.87/x
  3. Step 3: Cross multiply
    26,581.40x = 39,866.60 × 11,780.87
  4. Step 4: Simplify right side
    26,581.40x = 469,662,973.70
  5. Step 5: Solve for x
    x = 469,662,973.70/26,581.40
  6. Step 6: Final answer
    x = 17,668.86

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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.