Home / 13,828.52-20,742.31-7,591.46

Finding the Fourth Proportional to 13,828.52, 20,742.31 and 7,591.46

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Solution

The fourth proportional to 13,828.52, 20,742.31 and 7,591.46 is: 11,386.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.52 : 20,742.31 = 7,591.46 : x
  2. Step 2: Convert to fraction form
    13,828.52/20,742.31 = 7,591.46/x
  3. Step 3: Cross multiply
    13,828.52x = 20,742.31 × 7,591.46
  4. Step 4: Simplify right side
    13,828.52x = 157,464,449.55
  5. Step 5: Solve for x
    x = 157,464,449.55/13,828.52
  6. Step 6: Final answer
    x = 11,386.94

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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.