Home / 13,287.28-19,912.26-10,501.72

Finding the Fourth Proportional to 13,287.28, 19,912.26 and 10,501.72

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Solution

The fourth proportional to 13,287.28, 19,912.26 and 10,501.72 is: 15,737.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.28 : 19,912.26 = 10,501.72 : x
  2. Step 2: Convert to fraction form
    13,287.28/19,912.26 = 10,501.72/x
  3. Step 3: Cross multiply
    13,287.28x = 19,912.26 × 10,501.72
  4. Step 4: Simplify right side
    13,287.28x = 209,112,979.09
  5. Step 5: Solve for x
    x = 209,112,979.09/13,287.28
  6. Step 6: Final answer
    x = 15,737.83

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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.