Home / 19,633.20-29,430.60-7,930.80

Finding the Fourth Proportional to 19,633.20, 29,430.60 and 7,930.80

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Solution

The fourth proportional to 19,633.20, 29,430.60 and 7,930.80 is: 11,888.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,633.20 : 29,430.60 = 7,930.80 : x
  2. Step 2: Convert to fraction form
    19,633.20/29,430.60 = 7,930.80/x
  3. Step 3: Cross multiply
    19,633.20x = 29,430.60 × 7,930.80
  4. Step 4: Simplify right side
    19,633.20x = 233,408,202.48
  5. Step 5: Solve for x
    x = 233,408,202.48/19,633.20
  6. Step 6: Final answer
    x = 11,888.44

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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.