Home / 13,667.36-20,488.24-7,418.20

Finding the Fourth Proportional to 13,667.36, 20,488.24 and 7,418.20

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Solution

The fourth proportional to 13,667.36, 20,488.24 and 7,418.20 is: 11,120.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,667.36 : 20,488.24 = 7,418.20 : x
  2. Step 2: Convert to fraction form
    13,667.36/20,488.24 = 7,418.20/x
  3. Step 3: Cross multiply
    13,667.36x = 20,488.24 × 7,418.20
  4. Step 4: Simplify right side
    13,667.36x = 151,985,861.97
  5. Step 5: Solve for x
    x = 151,985,861.97/13,667.36
  6. Step 6: Final answer
    x = 11,120.35

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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.