Home / 31,158.75-42,986.78-19,201.26

Finding the Fourth Proportional to 31,158.75, 42,986.78 and 19,201.26

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Solution

The fourth proportional to 31,158.75, 42,986.78 and 19,201.26 is: 26,490.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,158.75 : 42,986.78 = 19,201.26 : x
  2. Step 2: Convert to fraction form
    31,158.75/42,986.78 = 19,201.26/x
  3. Step 3: Cross multiply
    31,158.75x = 42,986.78 × 19,201.26
  4. Step 4: Simplify right side
    31,158.75x = 825,400,028.40
  5. Step 5: Solve for x
    x = 825,400,028.40/31,158.75
  6. Step 6: Final answer
    x = 26,490.16

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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.