Home / 13,321.63-19,988.11-5,000.43

Finding the Fourth Proportional to 13,321.63, 19,988.11 and 5,000.43

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Solution

The fourth proportional to 13,321.63, 19,988.11 and 5,000.43 is: 7,502.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.63 : 19,988.11 = 5,000.43 : x
  2. Step 2: Convert to fraction form
    13,321.63/19,988.11 = 5,000.43/x
  3. Step 3: Cross multiply
    13,321.63x = 19,988.11 × 5,000.43
  4. Step 4: Simplify right side
    13,321.63x = 99,949,144.89
  5. Step 5: Solve for x
    x = 99,949,144.89/13,321.63
  6. Step 6: Final answer
    x = 7,502.77

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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.