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Finding the Fourth Proportional to 14,891.81, 20,572.04 and 11,903.72

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Solution

The fourth proportional to 14,891.81, 20,572.04 and 11,903.72 is: 16,444.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,891.81 : 20,572.04 = 11,903.72 : x
  2. Step 2: Convert to fraction form
    14,891.81/20,572.04 = 11,903.72/x
  3. Step 3: Cross multiply
    14,891.81x = 20,572.04 × 11,903.72
  4. Step 4: Simplify right side
    14,891.81x = 244,883,730.89
  5. Step 5: Solve for x
    x = 244,883,730.89/14,891.81
  6. Step 6: Final answer
    x = 16,444.19

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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.