Home / 31,121.10-42,950.75-17,694.37

Finding the Fourth Proportional to 31,121.10, 42,950.75 and 17,694.37

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Solution

The fourth proportional to 31,121.10, 42,950.75 and 17,694.37 is: 24,420.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,121.10 : 42,950.75 = 17,694.37 : x
  2. Step 2: Convert to fraction form
    31,121.10/42,950.75 = 17,694.37/x
  3. Step 3: Cross multiply
    31,121.10x = 42,950.75 × 17,694.37
  4. Step 4: Simplify right side
    31,121.10x = 759,986,462.28
  5. Step 5: Solve for x
    x = 759,986,462.28/31,121.10
  6. Step 6: Final answer
    x = 24,420.30

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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.