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Finding the Fourth Proportional to 19,102.89, 26,363.42 and 11,143.42

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Solution

The fourth proportional to 19,102.89, 26,363.42 and 11,143.42 is: 15,378.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,102.89 : 26,363.42 = 11,143.42 : x
  2. Step 2: Convert to fraction form
    19,102.89/26,363.42 = 11,143.42/x
  3. Step 3: Cross multiply
    19,102.89x = 26,363.42 × 11,143.42
  4. Step 4: Simplify right side
    19,102.89x = 293,778,661.70
  5. Step 5: Solve for x
    x = 293,778,661.70/19,102.89
  6. Step 6: Final answer
    x = 15,378.75

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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.