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Finding the Fourth Proportional to 21,959.44, 32,940.51 and 8,810.11

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Solution

The fourth proportional to 21,959.44, 32,940.51 and 8,810.11 is: 13,215.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.44 : 32,940.51 = 8,810.11 : x
  2. Step 2: Convert to fraction form
    21,959.44/32,940.51 = 8,810.11/x
  3. Step 3: Cross multiply
    21,959.44x = 32,940.51 × 8,810.11
  4. Step 4: Simplify right side
    21,959.44x = 290,209,516.56
  5. Step 5: Solve for x
    x = 290,209,516.56/21,959.44
  6. Step 6: Final answer
    x = 13,215.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.