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Finding the Fourth Proportional to 15,773.79, 21,765.36 and 9,058.49

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Solution

The fourth proportional to 15,773.79, 21,765.36 and 9,058.49 is: 12,499.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,773.79 : 21,765.36 = 9,058.49 : x
  2. Step 2: Convert to fraction form
    15,773.79/21,765.36 = 9,058.49/x
  3. Step 3: Cross multiply
    15,773.79x = 21,765.36 × 9,058.49
  4. Step 4: Simplify right side
    15,773.79x = 197,161,187.08
  5. Step 5: Solve for x
    x = 197,161,187.08/15,773.79
  6. Step 6: Final answer
    x = 12,499.29

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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.