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Finding the Fourth Proportional to 15,408.66, 21,264 and 8,335.14

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Solution

The fourth proportional to 15,408.66, 21,264 and 8,335.14 is: 11,502.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,408.66 : 21,264 = 8,335.14 : x
  2. Step 2: Convert to fraction form
    15,408.66/21,264 = 8,335.14/x
  3. Step 3: Cross multiply
    15,408.66x = 21,264 × 8,335.14
  4. Step 4: Simplify right side
    15,408.66x = 177,238,416.96
  5. Step 5: Solve for x
    x = 177,238,416.96/15,408.66
  6. Step 6: Final answer
    x = 11,502.52

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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.