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Finding the Fourth Proportional to 19,363.70, 26,720.34 and 10,864.64

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Solution

The fourth proportional to 19,363.70, 26,720.34 and 10,864.64 is: 14,992.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,363.70 : 26,720.34 = 10,864.64 : x
  2. Step 2: Convert to fraction form
    19,363.70/26,720.34 = 10,864.64/x
  3. Step 3: Cross multiply
    19,363.70x = 26,720.34 × 10,864.64
  4. Step 4: Simplify right side
    19,363.70x = 290,306,874.78
  5. Step 5: Solve for x
    x = 290,306,874.78/19,363.70
  6. Step 6: Final answer
    x = 14,992.32

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.