Home / 19,010.20-28,515.30-9,168.70

Finding the Fourth Proportional to 19,010.20, 28,515.30 and 9,168.70

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Solution

The fourth proportional to 19,010.20, 28,515.30 and 9,168.70 is: 13,753.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,010.20 : 28,515.30 = 9,168.70 : x
  2. Step 2: Convert to fraction form
    19,010.20/28,515.30 = 9,168.70/x
  3. Step 3: Cross multiply
    19,010.20x = 28,515.30 × 9,168.70
  4. Step 4: Simplify right side
    19,010.20x = 261,448,231.11
  5. Step 5: Solve for x
    x = 261,448,231.11/19,010.20
  6. Step 6: Final answer
    x = 13,753.05

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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.