Home / 13,358.72-20,128.26-11,069.64

Finding the Fourth Proportional to 13,358.72, 20,128.26 and 11,069.64

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Solution

The fourth proportional to 13,358.72, 20,128.26 and 11,069.64 is: 16,679.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.72 : 20,128.26 = 11,069.64 : x
  2. Step 2: Convert to fraction form
    13,358.72/20,128.26 = 11,069.64/x
  3. Step 3: Cross multiply
    13,358.72x = 20,128.26 × 11,069.64
  4. Step 4: Simplify right side
    13,358.72x = 222,812,592.03
  5. Step 5: Solve for x
    x = 222,812,592.03/13,358.72
  6. Step 6: Final answer
    x = 16,679.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.