Home / 27,630.05-38,108.88-21,649.82

Finding the Fourth Proportional to 27,630.05, 38,108.88 and 21,649.82

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Solution

The fourth proportional to 27,630.05, 38,108.88 and 21,649.82 is: 29,860.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,630.05 : 38,108.88 = 21,649.82 : x
  2. Step 2: Convert to fraction form
    27,630.05/38,108.88 = 21,649.82/x
  3. Step 3: Cross multiply
    27,630.05x = 38,108.88 × 21,649.82
  4. Step 4: Simplify right side
    27,630.05x = 825,050,201.86
  5. Step 5: Solve for x
    x = 825,050,201.86/27,630.05
  6. Step 6: Final answer
    x = 29,860.62

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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.