Home / 13,276.31-18,320.72-7,308.36

Finding the Fourth Proportional to 13,276.31, 18,320.72 and 7,308.36

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Solution

The fourth proportional to 13,276.31, 18,320.72 and 7,308.36 is: 10,085.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,276.31 : 18,320.72 = 7,308.36 : x
  2. Step 2: Convert to fraction form
    13,276.31/18,320.72 = 7,308.36/x
  3. Step 3: Cross multiply
    13,276.31x = 18,320.72 × 7,308.36
  4. Step 4: Simplify right side
    13,276.31x = 133,894,380.68
  5. Step 5: Solve for x
    x = 133,894,380.68/13,276.31
  6. Step 6: Final answer
    x = 10,085.21

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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.