Home / 29,108.88-40,138.47-19,661.04

Finding the Fourth Proportional to 29,108.88, 40,138.47 and 19,661.04

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Solution

The fourth proportional to 29,108.88, 40,138.47 and 19,661.04 is: 27,110.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,108.88 : 40,138.47 = 19,661.04 : x
  2. Step 2: Convert to fraction form
    29,108.88/40,138.47 = 19,661.04/x
  3. Step 3: Cross multiply
    29,108.88x = 40,138.47 × 19,661.04
  4. Step 4: Simplify right side
    29,108.88x = 789,164,064.21
  5. Step 5: Solve for x
    x = 789,164,064.21/29,108.88
  6. Step 6: Final answer
    x = 27,110.77

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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.