Home / 12,824.52-19,237.60-5,428.02

Finding the Fourth Proportional to 12,824.52, 19,237.60 and 5,428.02

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Solution

The fourth proportional to 12,824.52, 19,237.60 and 5,428.02 is: 8,142.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,824.52 : 19,237.60 = 5,428.02 : x
  2. Step 2: Convert to fraction form
    12,824.52/19,237.60 = 5,428.02/x
  3. Step 3: Cross multiply
    12,824.52x = 19,237.60 × 5,428.02
  4. Step 4: Simplify right side
    12,824.52x = 104,422,077.55
  5. Step 5: Solve for x
    x = 104,422,077.55/12,824.52
  6. Step 6: Final answer
    x = 8,142.38

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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.