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Finding the Fourth Proportional to 21,963.69, 32,948.69 and 7,168.95

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Solution

The fourth proportional to 21,963.69, 32,948.69 and 7,168.95 is: 10,754.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,963.69 : 32,948.69 = 7,168.95 : x
  2. Step 2: Convert to fraction form
    21,963.69/32,948.69 = 7,168.95/x
  3. Step 3: Cross multiply
    21,963.69x = 32,948.69 × 7,168.95
  4. Step 4: Simplify right side
    21,963.69x = 236,207,511.18
  5. Step 5: Solve for x
    x = 236,207,511.18/21,963.69
  6. Step 6: Final answer
    x = 10,754.45

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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.