Home / 20,453.60-30,657.96-11,669.36

Finding the Fourth Proportional to 20,453.60, 30,657.96 and 11,669.36

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Solution

The fourth proportional to 20,453.60, 30,657.96 and 11,669.36 is: 17,491.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.60 : 30,657.96 = 11,669.36 : x
  2. Step 2: Convert to fraction form
    20,453.60/30,657.96 = 11,669.36/x
  3. Step 3: Cross multiply
    20,453.60x = 30,657.96 × 11,669.36
  4. Step 4: Simplify right side
    20,453.60x = 357,758,772.11
  5. Step 5: Solve for x
    x = 357,758,772.11/20,453.60
  6. Step 6: Final answer
    x = 17,491.24

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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.