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Finding the Fourth Proportional to 14,661.72, 20,233.21 and 7,947.32

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Solution

The fourth proportional to 14,661.72, 20,233.21 and 7,947.32 is: 10,967.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,661.72 : 20,233.21 = 7,947.32 : x
  2. Step 2: Convert to fraction form
    14,661.72/20,233.21 = 7,947.32/x
  3. Step 3: Cross multiply
    14,661.72x = 20,233.21 × 7,947.32
  4. Step 4: Simplify right side
    14,661.72x = 160,799,673.46
  5. Step 5: Solve for x
    x = 160,799,673.46/14,661.72
  6. Step 6: Final answer
    x = 10,967.31

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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.