Home / 14,351.16-21,520.64-4,487.78

Finding the Fourth Proportional to 14,351.16, 21,520.64 and 4,487.78

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Solution

The fourth proportional to 14,351.16, 21,520.64 and 4,487.78 is: 6,729.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,351.16 : 21,520.64 = 4,487.78 : x
  2. Step 2: Convert to fraction form
    14,351.16/21,520.64 = 4,487.78/x
  3. Step 3: Cross multiply
    14,351.16x = 21,520.64 × 4,487.78
  4. Step 4: Simplify right side
    14,351.16x = 96,579,897.78
  5. Step 5: Solve for x
    x = 96,579,897.78/14,351.16
  6. Step 6: Final answer
    x = 6,729.76

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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.