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Finding the Fourth Proportional to 18,951.48, 26,138.94 and 13,914.12

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Solution

The fourth proportional to 18,951.48, 26,138.94 and 13,914.12 is: 19,191.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,951.48 : 26,138.94 = 13,914.12 : x
  2. Step 2: Convert to fraction form
    18,951.48/26,138.94 = 13,914.12/x
  3. Step 3: Cross multiply
    18,951.48x = 26,138.94 × 13,914.12
  4. Step 4: Simplify right side
    18,951.48x = 363,700,347.83
  5. Step 5: Solve for x
    x = 363,700,347.83/18,951.48
  6. Step 6: Final answer
    x = 19,191.13

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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.