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Finding the Fourth Proportional to 14,361.60, 21,543.12 and 5,127.60

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Solution

The fourth proportional to 14,361.60, 21,543.12 and 5,127.60 is: 7,691.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,361.60 : 21,543.12 = 5,127.60 : x
  2. Step 2: Convert to fraction form
    14,361.60/21,543.12 = 5,127.60/x
  3. Step 3: Cross multiply
    14,361.60x = 21,543.12 × 5,127.60
  4. Step 4: Simplify right side
    14,361.60x = 110,464,502.11
  5. Step 5: Solve for x
    x = 110,464,502.11/14,361.60
  6. Step 6: Final answer
    x = 7,691.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.