Home / 19,121.09-28,676.61-8,585.21

Finding the Fourth Proportional to 19,121.09, 28,676.61 and 8,585.21

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Solution

The fourth proportional to 19,121.09, 28,676.61 and 8,585.21 is: 12,875.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.09 : 28,676.61 = 8,585.21 : x
  2. Step 2: Convert to fraction form
    19,121.09/28,676.61 = 8,585.21/x
  3. Step 3: Cross multiply
    19,121.09x = 28,676.61 × 8,585.21
  4. Step 4: Simplify right side
    19,121.09x = 246,194,790.63
  5. Step 5: Solve for x
    x = 246,194,790.63/19,121.09
  6. Step 6: Final answer
    x = 12,875.57

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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.