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Finding the Fourth Proportional to 15,626.91, 21,565.69 and 8,553.34

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Solution

The fourth proportional to 15,626.91, 21,565.69 and 8,553.34 is: 11,803.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,626.91 : 21,565.69 = 8,553.34 : x
  2. Step 2: Convert to fraction form
    15,626.91/21,565.69 = 8,553.34/x
  3. Step 3: Cross multiply
    15,626.91x = 21,565.69 × 8,553.34
  4. Step 4: Simplify right side
    15,626.91x = 184,458,678.90
  5. Step 5: Solve for x
    x = 184,458,678.90/15,626.91
  6. Step 6: Final answer
    x = 11,803.91

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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.