Home / 19,584.40-29,378.40-7,895.20

Finding the Fourth Proportional to 19,584.40, 29,378.40 and 7,895.20

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Solution

The fourth proportional to 19,584.40, 29,378.40 and 7,895.20 is: 11,843.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,584.40 : 29,378.40 = 7,895.20 : x
  2. Step 2: Convert to fraction form
    19,584.40/29,378.40 = 7,895.20/x
  3. Step 3: Cross multiply
    19,584.40x = 29,378.40 × 7,895.20
  4. Step 4: Simplify right side
    19,584.40x = 231,948,343.68
  5. Step 5: Solve for x
    x = 231,948,343.68/19,584.40
  6. Step 6: Final answer
    x = 11,843.53

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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.