Home / 18,988.56-28,489.32-10,224.36

Finding the Fourth Proportional to 18,988.56, 28,489.32 and 10,224.36

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Solution

The fourth proportional to 18,988.56, 28,489.32 and 10,224.36 is: 15,340.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.56 : 28,489.32 = 10,224.36 : x
  2. Step 2: Convert to fraction form
    18,988.56/28,489.32 = 10,224.36/x
  3. Step 3: Cross multiply
    18,988.56x = 28,489.32 × 10,224.36
  4. Step 4: Simplify right side
    18,988.56x = 291,285,063.84
  5. Step 5: Solve for x
    x = 291,285,063.84/18,988.56
  6. Step 6: Final answer
    x = 15,340.03

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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.