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Finding the Fourth Proportional to 13,701.01, 18,902.76 and 11,178.76

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Solution

The fourth proportional to 13,701.01, 18,902.76 and 11,178.76 is: 15,422.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,701.01 : 18,902.76 = 11,178.76 : x
  2. Step 2: Convert to fraction form
    13,701.01/18,902.76 = 11,178.76/x
  3. Step 3: Cross multiply
    13,701.01x = 18,902.76 × 11,178.76
  4. Step 4: Simplify right side
    13,701.01x = 211,309,417.38
  5. Step 5: Solve for x
    x = 211,309,417.38/13,701.01
  6. Step 6: Final answer
    x = 15,422.91

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Half scale
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Double scale
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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.