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Finding the Fourth Proportional to 18,860.50, 26,027.49 and 14,389.30

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Solution

The fourth proportional to 18,860.50, 26,027.49 and 14,389.30 is: 19,857.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,860.50 : 26,027.49 = 14,389.30 : x
  2. Step 2: Convert to fraction form
    18,860.50/26,027.49 = 14,389.30/x
  3. Step 3: Cross multiply
    18,860.50x = 26,027.49 × 14,389.30
  4. Step 4: Simplify right side
    18,860.50x = 374,517,361.86
  5. Step 5: Solve for x
    x = 374,517,361.86/18,860.50
  6. Step 6: Final answer
    x = 19,857.23

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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.