Home / 15,684.57-21,645.19-8,878.09

Finding the Fourth Proportional to 15,684.57, 21,645.19 and 8,878.09

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Solution

The fourth proportional to 15,684.57, 21,645.19 and 8,878.09 is: 12,252.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,684.57 : 21,645.19 = 8,878.09 : x
  2. Step 2: Convert to fraction form
    15,684.57/21,645.19 = 8,878.09/x
  3. Step 3: Cross multiply
    15,684.57x = 21,645.19 × 8,878.09
  4. Step 4: Simplify right side
    15,684.57x = 192,167,944.89
  5. Step 5: Solve for x
    x = 192,167,944.89/15,684.57
  6. Step 6: Final answer
    x = 12,252.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.