Home / 20,788.74-31,171.86-9,088.26

Finding the Fourth Proportional to 20,788.74, 31,171.86 and 9,088.26

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Solution

The fourth proportional to 20,788.74, 31,171.86 and 9,088.26 is: 13,627.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.74 : 31,171.86 = 9,088.26 : x
  2. Step 2: Convert to fraction form
    20,788.74/31,171.86 = 9,088.26/x
  3. Step 3: Cross multiply
    20,788.74x = 31,171.86 × 9,088.26
  4. Step 4: Simplify right side
    20,788.74x = 283,297,968.36
  5. Step 5: Solve for x
    x = 283,297,968.36/20,788.74
  6. Step 6: Final answer
    x = 13,627.47

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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.