Home / 31,219.83-43,083.09-17,072.78

Finding the Fourth Proportional to 31,219.83, 43,083.09 and 17,072.78

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Solution

The fourth proportional to 31,219.83, 43,083.09 and 17,072.78 is: 23,560.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,219.83 : 43,083.09 = 17,072.78 : x
  2. Step 2: Convert to fraction form
    31,219.83/43,083.09 = 17,072.78/x
  3. Step 3: Cross multiply
    31,219.83x = 43,083.09 × 17,072.78
  4. Step 4: Simplify right side
    31,219.83x = 735,547,901.87
  5. Step 5: Solve for x
    x = 735,547,901.87/31,219.83
  6. Step 6: Final answer
    x = 23,560.28

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1.5x scale

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.