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Finding the Fourth Proportional to 22,360.95, 30,889.60 and 21,179.97

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Solution

The fourth proportional to 22,360.95, 30,889.60 and 21,179.97 is: 29,258.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,360.95 : 30,889.60 = 21,179.97 : x
  2. Step 2: Convert to fraction form
    22,360.95/30,889.60 = 21,179.97/x
  3. Step 3: Cross multiply
    22,360.95x = 30,889.60 × 21,179.97
  4. Step 4: Simplify right side
    22,360.95x = 654,240,748.36
  5. Step 5: Solve for x
    x = 654,240,748.36/22,360.95
  6. Step 6: Final answer
    x = 29,258.18

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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.