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Finding the Fourth Proportional to 10,954.80, 16,432.20 and 10,047.60

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Solution

The fourth proportional to 10,954.80, 16,432.20 and 10,047.60 is: 15,071.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,954.80 : 16,432.20 = 10,047.60 : x
  2. Step 2: Convert to fraction form
    10,954.80/16,432.20 = 10,047.60/x
  3. Step 3: Cross multiply
    10,954.80x = 16,432.20 × 10,047.60
  4. Step 4: Simplify right side
    10,954.80x = 165,104,172.72
  5. Step 5: Solve for x
    x = 165,104,172.72/10,954.80
  6. Step 6: Final answer
    x = 15,071.40

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