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Finding the Fourth Proportional to 11,143.80, 16,715.70 and 10,949.40

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Solution

The fourth proportional to 11,143.80, 16,715.70 and 10,949.40 is: 16,424.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.80 : 16,715.70 = 10,949.40 : x
  2. Step 2: Convert to fraction form
    11,143.80/16,715.70 = 10,949.40/x
  3. Step 3: Cross multiply
    11,143.80x = 16,715.70 × 10,949.40
  4. Step 4: Simplify right side
    11,143.80x = 183,026,885.58
  5. Step 5: Solve for x
    x = 183,026,885.58/11,143.80
  6. Step 6: Final answer
    x = 16,424.10

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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.