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Finding the Fourth Proportional to 22,460.88, 30,961.80 and 15,365.28

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Solution

The fourth proportional to 22,460.88, 30,961.80 and 15,365.28 is: 21,180.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,460.88 : 30,961.80 = 15,365.28 : x
  2. Step 2: Convert to fraction form
    22,460.88/30,961.80 = 15,365.28/x
  3. Step 3: Cross multiply
    22,460.88x = 30,961.80 × 15,365.28
  4. Step 4: Simplify right side
    22,460.88x = 475,736,726.30
  5. Step 5: Solve for x
    x = 475,736,726.30/22,460.88
  6. Step 6: Final answer
    x = 21,180.68

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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.