Home / 18,983.80-28,467.36-10,097.20

Finding the Fourth Proportional to 18,983.80, 28,467.36 and 10,097.20

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Solution

The fourth proportional to 18,983.80, 28,467.36 and 10,097.20 is: 15,141.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,983.80 : 28,467.36 = 10,097.20 : x
  2. Step 2: Convert to fraction form
    18,983.80/28,467.36 = 10,097.20/x
  3. Step 3: Cross multiply
    18,983.80x = 28,467.36 × 10,097.20
  4. Step 4: Simplify right side
    18,983.80x = 287,440,627.39
  5. Step 5: Solve for x
    x = 287,440,627.39/18,983.80
  6. Step 6: Final answer
    x = 15,141.36

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1.5x scale

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.