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Finding the Fourth Proportional to 14,840.55, 20,478.62 and 8,468.69

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Solution

The fourth proportional to 14,840.55, 20,478.62 and 8,468.69 is: 11,686.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,840.55 : 20,478.62 = 8,468.69 : x
  2. Step 2: Convert to fraction form
    14,840.55/20,478.62 = 8,468.69/x
  3. Step 3: Cross multiply
    14,840.55x = 20,478.62 × 8,468.69
  4. Step 4: Simplify right side
    14,840.55x = 173,427,003.19
  5. Step 5: Solve for x
    x = 173,427,003.19/14,840.55
  6. Step 6: Final answer
    x = 11,686.02

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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.