Home / 12,905.50-19,360.28-5,510

Finding the Fourth Proportional to 12,905.50, 19,360.28 and 5,510

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Solution

The fourth proportional to 12,905.50, 19,360.28 and 5,510 is: 8,265.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.50 : 19,360.28 = 5,510 : x
  2. Step 2: Convert to fraction form
    12,905.50/19,360.28 = 5,510/x
  3. Step 3: Cross multiply
    12,905.50x = 19,360.28 × 5,510
  4. Step 4: Simplify right side
    12,905.50x = 106,675,142.80
  5. Step 5: Solve for x
    x = 106,675,142.80/12,905.50
  6. Step 6: Final answer
    x = 8,265.87

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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.