Home / 21,585.57-29,790.21-12,632.54

Finding the Fourth Proportional to 21,585.57, 29,790.21 and 12,632.54

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Solution

The fourth proportional to 21,585.57, 29,790.21 and 12,632.54 is: 17,434.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,585.57 : 29,790.21 = 12,632.54 : x
  2. Step 2: Convert to fraction form
    21,585.57/29,790.21 = 12,632.54/x
  3. Step 3: Cross multiply
    21,585.57x = 29,790.21 × 12,632.54
  4. Step 4: Simplify right side
    21,585.57x = 376,325,917.85
  5. Step 5: Solve for x
    x = 376,325,917.85/21,585.57
  6. Step 6: Final answer
    x = 17,434.15

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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.