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Finding the Fourth Proportional to 15,100.31, 20,841.09 and 11,291.06

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Solution

The fourth proportional to 15,100.31, 20,841.09 and 11,291.06 is: 15,583.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,100.31 : 20,841.09 = 11,291.06 : x
  2. Step 2: Convert to fraction form
    15,100.31/20,841.09 = 11,291.06/x
  3. Step 3: Cross multiply
    15,100.31x = 20,841.09 × 11,291.06
  4. Step 4: Simplify right side
    15,100.31x = 235,317,893.45
  5. Step 5: Solve for x
    x = 235,317,893.45/15,100.31
  6. Step 6: Final answer
    x = 15,583.65

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1.5x scale

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.