Home / 13,016.64-19,515.24-5,221.20

Finding the Fourth Proportional to 13,016.64, 19,515.24 and 5,221.20

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Solution

The fourth proportional to 13,016.64, 19,515.24 and 5,221.20 is: 7,827.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,016.64 : 19,515.24 = 5,221.20 : x
  2. Step 2: Convert to fraction form
    13,016.64/19,515.24 = 5,221.20/x
  3. Step 3: Cross multiply
    13,016.64x = 19,515.24 × 5,221.20
  4. Step 4: Simplify right side
    13,016.64x = 101,892,971.09
  5. Step 5: Solve for x
    x = 101,892,971.09/13,016.64
  6. Step 6: Final answer
    x = 7,827.90

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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.