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Finding the Fourth Proportional to 15,773.12, 21,766.71 and 8,603.01

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Solution

The fourth proportional to 15,773.12, 21,766.71 and 8,603.01 is: 11,872.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,773.12 : 21,766.71 = 8,603.01 : x
  2. Step 2: Convert to fraction form
    15,773.12/21,766.71 = 8,603.01/x
  3. Step 3: Cross multiply
    15,773.12x = 21,766.71 × 8,603.01
  4. Step 4: Simplify right side
    15,773.12x = 187,259,223.80
  5. Step 5: Solve for x
    x = 187,259,223.80/15,773.12
  6. Step 6: Final answer
    x = 11,872.05

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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.