Home / 31,161.11-42,957.67-19,216.43

Finding the Fourth Proportional to 31,161.11, 42,957.67 and 19,216.43

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Solution

The fourth proportional to 31,161.11, 42,957.67 and 19,216.43 is: 26,491.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,161.11 : 42,957.67 = 19,216.43 : x
  2. Step 2: Convert to fraction form
    31,161.11/42,957.67 = 19,216.43/x
  3. Step 3: Cross multiply
    31,161.11x = 42,957.67 × 19,216.43
  4. Step 4: Simplify right side
    31,161.11x = 825,493,058.52
  5. Step 5: Solve for x
    x = 825,493,058.52/31,161.11
  6. Step 6: Final answer
    x = 26,491.13

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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.