Home / 13,272.20-19,905.87-5,374.30

Finding the Fourth Proportional to 13,272.20, 19,905.87 and 5,374.30

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Solution

The fourth proportional to 13,272.20, 19,905.87 and 5,374.30 is: 8,060.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,272.20 : 19,905.87 = 5,374.30 : x
  2. Step 2: Convert to fraction form
    13,272.20/19,905.87 = 5,374.30/x
  3. Step 3: Cross multiply
    13,272.20x = 19,905.87 × 5,374.30
  4. Step 4: Simplify right side
    13,272.20x = 106,980,117.14
  5. Step 5: Solve for x
    x = 106,980,117.14/13,272.20
  6. Step 6: Final answer
    x = 8,060.47

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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.