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Finding the Fourth Proportional to 15,408.95, 21,264.26 and 8,335.22

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Solution

The fourth proportional to 15,408.95, 21,264.26 and 8,335.22 is: 11,502.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,408.95 : 21,264.26 = 8,335.22 : x
  2. Step 2: Convert to fraction form
    15,408.95/21,264.26 = 8,335.22/x
  3. Step 3: Cross multiply
    15,408.95x = 21,264.26 × 8,335.22
  4. Step 4: Simplify right side
    15,408.95x = 177,242,137.24
  5. Step 5: Solve for x
    x = 177,242,137.24/15,408.95
  6. Step 6: Final answer
    x = 11,502.55

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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.