Home / 25,640.90-35,369.16-18,943.82

Finding the Fourth Proportional to 25,640.90, 35,369.16 and 18,943.82

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Solution

The fourth proportional to 25,640.90, 35,369.16 and 18,943.82 is: 26,131.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,640.90 : 35,369.16 = 18,943.82 : x
  2. Step 2: Convert to fraction form
    25,640.90/35,369.16 = 18,943.82/x
  3. Step 3: Cross multiply
    25,640.90x = 35,369.16 × 18,943.82
  4. Step 4: Simplify right side
    25,640.90x = 670,027,000.59
  5. Step 5: Solve for x
    x = 670,027,000.59/25,640.90
  6. Step 6: Final answer
    x = 26,131.18

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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.