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Finding the Fourth Proportional to 15,683.57, 21,643.81 and 8,877.09

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Solution

The fourth proportional to 15,683.57, 21,643.81 and 8,877.09 is: 12,250.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,683.57 : 21,643.81 = 8,877.09 : x
  2. Step 2: Convert to fraction form
    15,683.57/21,643.81 = 8,877.09/x
  3. Step 3: Cross multiply
    15,683.57x = 21,643.81 × 8,877.09
  4. Step 4: Simplify right side
    15,683.57x = 192,134,108.28
  5. Step 5: Solve for x
    x = 192,134,108.28/15,683.57
  6. Step 6: Final answer
    x = 12,250.66

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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.