Home / 36,138.61-49,872-21,798.37

Finding the Fourth Proportional to 36,138.61, 49,872 and 21,798.37

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Solution

The fourth proportional to 36,138.61, 49,872 and 21,798.37 is: 30,082.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,138.61 : 49,872 = 21,798.37 : x
  2. Step 2: Convert to fraction form
    36,138.61/49,872 = 21,798.37/x
  3. Step 3: Cross multiply
    36,138.61x = 49,872 × 21,798.37
  4. Step 4: Simplify right side
    36,138.61x = 1,087,128,308.64
  5. Step 5: Solve for x
    x = 1,087,128,308.64/36,138.61
  6. Step 6: Final answer
    x = 30,082.18

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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.