Home / 13,239.28-19,867.29-7,399.72

Finding the Fourth Proportional to 13,239.28, 19,867.29 and 7,399.72

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Solution

The fourth proportional to 13,239.28, 19,867.29 and 7,399.72 is: 11,104.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.28 : 19,867.29 = 7,399.72 : x
  2. Step 2: Convert to fraction form
    13,239.28/19,867.29 = 7,399.72/x
  3. Step 3: Cross multiply
    13,239.28x = 19,867.29 × 7,399.72
  4. Step 4: Simplify right side
    13,239.28x = 147,012,383.16
  5. Step 5: Solve for x
    x = 147,012,383.16/13,239.28
  6. Step 6: Final answer
    x = 11,104.26

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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.