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Finding the Fourth Proportional to 18,918, 26,063.37 and 14,937.66

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Solution

The fourth proportional to 18,918, 26,063.37 and 14,937.66 is: 20,579.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918 : 26,063.37 = 14,937.66 : x
  2. Step 2: Convert to fraction form
    18,918/26,063.37 = 14,937.66/x
  3. Step 3: Cross multiply
    18,918x = 26,063.37 × 14,937.66
  4. Step 4: Simplify right side
    18,918x = 389,325,759.51
  5. Step 5: Solve for x
    x = 389,325,759.51/18,918
  6. Step 6: Final answer
    x = 20,579.65

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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.