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Finding the Fourth Proportional to 10,957.80, 16,436.70 and 4,031.40

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Solution

The fourth proportional to 10,957.80, 16,436.70 and 4,031.40 is: 6,047.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,957.80 : 16,436.70 = 4,031.40 : x
  2. Step 2: Convert to fraction form
    10,957.80/16,436.70 = 4,031.40/x
  3. Step 3: Cross multiply
    10,957.80x = 16,436.70 × 4,031.40
  4. Step 4: Simplify right side
    10,957.80x = 66,262,912.38
  5. Step 5: Solve for x
    x = 66,262,912.38/10,957.80
  6. Step 6: Final answer
    x = 6,047.10

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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.