Home / 13,997.40-20,979.90-5,673.30

Finding the Fourth Proportional to 13,997.40, 20,979.90 and 5,673.30

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Solution

The fourth proportional to 13,997.40, 20,979.90 and 5,673.30 is: 8,503.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,997.40 : 20,979.90 = 5,673.30 : x
  2. Step 2: Convert to fraction form
    13,997.40/20,979.90 = 5,673.30/x
  3. Step 3: Cross multiply
    13,997.40x = 20,979.90 × 5,673.30
  4. Step 4: Simplify right side
    13,997.40x = 119,025,266.67
  5. Step 5: Solve for x
    x = 119,025,266.67/13,997.40
  6. Step 6: Final answer
    x = 8,503.38

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1.5x scale

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.