Home / 13,989.62-20,979.45-4,627.91

Finding the Fourth Proportional to 13,989.62, 20,979.45 and 4,627.91

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Solution

The fourth proportional to 13,989.62, 20,979.45 and 4,627.91 is: 6,940.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.62 : 20,979.45 = 4,627.91 : x
  2. Step 2: Convert to fraction form
    13,989.62/20,979.45 = 4,627.91/x
  3. Step 3: Cross multiply
    13,989.62x = 20,979.45 × 4,627.91
  4. Step 4: Simplify right side
    13,989.62x = 97,090,901.55
  5. Step 5: Solve for x
    x = 97,090,901.55/13,989.62
  6. Step 6: Final answer
    x = 6,940.21

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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.