Home / 19,116.90-28,679.40-5,788.80

Finding the Fourth Proportional to 19,116.90, 28,679.40 and 5,788.80

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Solution

The fourth proportional to 19,116.90, 28,679.40 and 5,788.80 is: 8,684.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,116.90 : 28,679.40 = 5,788.80 : x
  2. Step 2: Convert to fraction form
    19,116.90/28,679.40 = 5,788.80/x
  3. Step 3: Cross multiply
    19,116.90x = 28,679.40 × 5,788.80
  4. Step 4: Simplify right side
    19,116.90x = 166,019,310.72
  5. Step 5: Solve for x
    x = 166,019,310.72/19,116.90
  6. Step 6: Final answer
    x = 8,684.43

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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.