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Finding the Fourth Proportional to 15,458.55, 21,332.81 and 8,744.04

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Solution

The fourth proportional to 15,458.55, 21,332.81 and 8,744.04 is: 12,066.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.55 : 21,332.81 = 8,744.04 : x
  2. Step 2: Convert to fraction form
    15,458.55/21,332.81 = 8,744.04/x
  3. Step 3: Cross multiply
    15,458.55x = 21,332.81 × 8,744.04
  4. Step 4: Simplify right side
    15,458.55x = 186,534,943.95
  5. Step 5: Solve for x
    x = 186,534,943.95/15,458.55
  6. Step 6: Final answer
    x = 12,066.78

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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.