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Finding the Fourth Proportional to 15,100.18, 20,838.54 and 8,386.44

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Solution

The fourth proportional to 15,100.18, 20,838.54 and 8,386.44 is: 11,573.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,100.18 : 20,838.54 = 8,386.44 : x
  2. Step 2: Convert to fraction form
    15,100.18/20,838.54 = 8,386.44/x
  3. Step 3: Cross multiply
    15,100.18x = 20,838.54 × 8,386.44
  4. Step 4: Simplify right side
    15,100.18x = 174,761,165.40
  5. Step 5: Solve for x
    x = 174,761,165.40/15,100.18
  6. Step 6: Final answer
    x = 11,573.45

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