Home / 13,849.57-20,774.40-3,988.90

Finding the Fourth Proportional to 13,849.57, 20,774.40 and 3,988.90

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Solution

The fourth proportional to 13,849.57, 20,774.40 and 3,988.90 is: 5,983.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,849.57 : 20,774.40 = 3,988.90 : x
  2. Step 2: Convert to fraction form
    13,849.57/20,774.40 = 3,988.90/x
  3. Step 3: Cross multiply
    13,849.57x = 20,774.40 × 3,988.90
  4. Step 4: Simplify right side
    13,849.57x = 82,867,004.16
  5. Step 5: Solve for x
    x = 82,867,004.16/13,849.57
  6. Step 6: Final answer
    x = 5,983.36

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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.