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Finding the Fourth Proportional to 18,951.21, 26,151.51 and 10,885.26

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Solution

The fourth proportional to 18,951.21, 26,151.51 and 10,885.26 is: 15,020.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,951.21 : 26,151.51 = 10,885.26 : x
  2. Step 2: Convert to fraction form
    18,951.21/26,151.51 = 10,885.26/x
  3. Step 3: Cross multiply
    18,951.21x = 26,151.51 × 10,885.26
  4. Step 4: Simplify right side
    18,951.21x = 284,665,985.74
  5. Step 5: Solve for x
    x = 284,665,985.74/18,951.21
  6. Step 6: Final answer
    x = 15,020.99

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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.