Home / 13,272.40-19,908.42-7,722.79

Finding the Fourth Proportional to 13,272.40, 19,908.42 and 7,722.79

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Solution

The fourth proportional to 13,272.40, 19,908.42 and 7,722.79 is: 11,584.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,272.40 : 19,908.42 = 7,722.79 : x
  2. Step 2: Convert to fraction form
    13,272.40/19,908.42 = 7,722.79/x
  3. Step 3: Cross multiply
    13,272.40x = 19,908.42 × 7,722.79
  4. Step 4: Simplify right side
    13,272.40x = 153,748,546.89
  5. Step 5: Solve for x
    x = 153,748,546.89/13,272.40
  6. Step 6: Final answer
    x = 11,584.08

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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.