Home / 12,864.78-17,731.50-10,619.46

Finding the Fourth Proportional to 12,864.78, 17,731.50 and 10,619.46

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Solution

The fourth proportional to 12,864.78, 17,731.50 and 10,619.46 is: 14,636.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,864.78 : 17,731.50 = 10,619.46 : x
  2. Step 2: Convert to fraction form
    12,864.78/17,731.50 = 10,619.46/x
  3. Step 3: Cross multiply
    12,864.78x = 17,731.50 × 10,619.46
  4. Step 4: Simplify right side
    12,864.78x = 188,298,954.99
  5. Step 5: Solve for x
    x = 188,298,954.99/12,864.78
  6. Step 6: Final answer
    x = 14,636.78

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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.