Home / 19,118.57-28,685.21-9,257.09

Finding the Fourth Proportional to 19,118.57, 28,685.21 and 9,257.09

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Solution

The fourth proportional to 19,118.57, 28,685.21 and 9,257.09 is: 13,889.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,118.57 : 28,685.21 = 9,257.09 : x
  2. Step 2: Convert to fraction form
    19,118.57/28,685.21 = 9,257.09/x
  3. Step 3: Cross multiply
    19,118.57x = 28,685.21 × 9,257.09
  4. Step 4: Simplify right side
    19,118.57x = 265,541,380.93
  5. Step 5: Solve for x
    x = 265,541,380.93/19,118.57
  6. Step 6: Final answer
    x = 13,889.19

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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.