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Finding the Fourth Proportional to 14,478.61, 21,696.04 and 10,763.41

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Solution

The fourth proportional to 14,478.61, 21,696.04 and 10,763.41 is: 16,128.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,478.61 : 21,696.04 = 10,763.41 : x
  2. Step 2: Convert to fraction form
    14,478.61/21,696.04 = 10,763.41/x
  3. Step 3: Cross multiply
    14,478.61x = 21,696.04 × 10,763.41
  4. Step 4: Simplify right side
    14,478.61x = 233,523,373.90
  5. Step 5: Solve for x
    x = 233,523,373.90/14,478.61
  6. Step 6: Final answer
    x = 16,128.85

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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.