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Finding the Fourth Proportional to 14,740.50, 20,341.89 and 8,116.50

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Solution

The fourth proportional to 14,740.50, 20,341.89 and 8,116.50 is: 11,200.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,740.50 : 20,341.89 = 8,116.50 : x
  2. Step 2: Convert to fraction form
    14,740.50/20,341.89 = 8,116.50/x
  3. Step 3: Cross multiply
    14,740.50x = 20,341.89 × 8,116.50
  4. Step 4: Simplify right side
    14,740.50x = 165,104,950.19
  5. Step 5: Solve for x
    x = 165,104,950.19/14,740.50
  6. Step 6: Final answer
    x = 11,200.77

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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.