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Finding the Fourth Proportional to 19,506.80, 26,914.20 and 11,123.12

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Solution

The fourth proportional to 19,506.80, 26,914.20 and 11,123.12 is: 15,346.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,506.80 : 26,914.20 = 11,123.12 : x
  2. Step 2: Convert to fraction form
    19,506.80/26,914.20 = 11,123.12/x
  3. Step 3: Cross multiply
    19,506.80x = 26,914.20 × 11,123.12
  4. Step 4: Simplify right side
    19,506.80x = 299,369,876.30
  5. Step 5: Solve for x
    x = 299,369,876.30/19,506.80
  6. Step 6: Final answer
    x = 15,346.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.