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Finding the Fourth Proportional to 14,615.64, 21,921.03 and 5,253.93

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Solution

The fourth proportional to 14,615.64, 21,921.03 and 5,253.93 is: 7,880.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,615.64 : 21,921.03 = 5,253.93 : x
  2. Step 2: Convert to fraction form
    14,615.64/21,921.03 = 5,253.93/x
  3. Step 3: Cross multiply
    14,615.64x = 21,921.03 × 5,253.93
  4. Step 4: Simplify right side
    14,615.64x = 115,171,557.15
  5. Step 5: Solve for x
    x = 115,171,557.15/14,615.64
  6. Step 6: Final answer
    x = 7,880.02

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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.