Home / 28,918.60-43,377.90-17,789.20

Finding the Fourth Proportional to 28,918.60, 43,377.90 and 17,789.20

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Solution

The fourth proportional to 28,918.60, 43,377.90 and 17,789.20 is: 26,683.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,918.60 : 43,377.90 = 17,789.20 : x
  2. Step 2: Convert to fraction form
    28,918.60/43,377.90 = 17,789.20/x
  3. Step 3: Cross multiply
    28,918.60x = 43,377.90 × 17,789.20
  4. Step 4: Simplify right side
    28,918.60x = 771,658,138.68
  5. Step 5: Solve for x
    x = 771,658,138.68/28,918.60
  6. Step 6: Final answer
    x = 26,683.80

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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.