Home / 30,138.08-41,588.51-17,391.79

Finding the Fourth Proportional to 30,138.08, 41,588.51 and 17,391.79

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Solution

The fourth proportional to 30,138.08, 41,588.51 and 17,391.79 is: 23,999.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,138.08 : 41,588.51 = 17,391.79 : x
  2. Step 2: Convert to fraction form
    30,138.08/41,588.51 = 17,391.79/x
  3. Step 3: Cross multiply
    30,138.08x = 41,588.51 × 17,391.79
  4. Step 4: Simplify right side
    30,138.08x = 723,298,571.84
  5. Step 5: Solve for x
    x = 723,298,571.84/30,138.08
  6. Step 6: Final answer
    x = 23,999.49

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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.