Home / 19,765.36-29,638.80-7,282.24

Finding the Fourth Proportional to 19,765.36, 29,638.80 and 7,282.24

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Solution

The fourth proportional to 19,765.36, 29,638.80 and 7,282.24 is: 10,919.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,765.36 : 29,638.80 = 7,282.24 : x
  2. Step 2: Convert to fraction form
    19,765.36/29,638.80 = 7,282.24/x
  3. Step 3: Cross multiply
    19,765.36x = 29,638.80 × 7,282.24
  4. Step 4: Simplify right side
    19,765.36x = 215,836,854.91
  5. Step 5: Solve for x
    x = 215,836,854.91/19,765.36
  6. Step 6: Final answer
    x = 10,919.96

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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.