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Finding the Fourth Proportional to 21,959.52, 32,946.12 and 7,168.56

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Solution

The fourth proportional to 21,959.52, 32,946.12 and 7,168.56 is: 10,755.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.52 : 32,946.12 = 7,168.56 : x
  2. Step 2: Convert to fraction form
    21,959.52/32,946.12 = 7,168.56/x
  3. Step 3: Cross multiply
    21,959.52x = 32,946.12 × 7,168.56
  4. Step 4: Simplify right side
    21,959.52x = 236,176,237.99
  5. Step 5: Solve for x
    x = 236,176,237.99/21,959.52
  6. Step 6: Final answer
    x = 10,755.07

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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.