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Finding the Fourth Proportional to 15,622.80, 21,559.46 and 8,549.22

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Solution

The fourth proportional to 15,622.80, 21,559.46 and 8,549.22 is: 11,797.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,622.80 : 21,559.46 = 8,549.22 : x
  2. Step 2: Convert to fraction form
    15,622.80/21,559.46 = 8,549.22/x
  3. Step 3: Cross multiply
    15,622.80x = 21,559.46 × 8,549.22
  4. Step 4: Simplify right side
    15,622.80x = 184,316,566.62
  5. Step 5: Solve for x
    x = 184,316,566.62/15,622.80
  6. Step 6: Final answer
    x = 11,797.92

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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.