Home / 19,197.40-28,780.10-8,112.60

Finding the Fourth Proportional to 19,197.40, 28,780.10 and 8,112.60

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Solution

The fourth proportional to 19,197.40, 28,780.10 and 8,112.60 is: 12,162.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,197.40 : 28,780.10 = 8,112.60 : x
  2. Step 2: Convert to fraction form
    19,197.40/28,780.10 = 8,112.60/x
  3. Step 3: Cross multiply
    19,197.40x = 28,780.10 × 8,112.60
  4. Step 4: Simplify right side
    19,197.40x = 233,481,439.26
  5. Step 5: Solve for x
    x = 233,481,439.26/19,197.40
  6. Step 6: Final answer
    x = 12,162.14

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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.