Home / 13,664.28-18,856.40-7,614.61

Finding the Fourth Proportional to 13,664.28, 18,856.40 and 7,614.61

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Solution

The fourth proportional to 13,664.28, 18,856.40 and 7,614.61 is: 10,507.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664.28 : 18,856.40 = 7,614.61 : x
  2. Step 2: Convert to fraction form
    13,664.28/18,856.40 = 7,614.61/x
  3. Step 3: Cross multiply
    13,664.28x = 18,856.40 × 7,614.61
  4. Step 4: Simplify right side
    13,664.28x = 143,584,132.00
  5. Step 5: Solve for x
    x = 143,584,132.00/13,664.28
  6. Step 6: Final answer
    x = 10,507.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.