Home / 21,581.96-29,785.38-12,632.36

Finding the Fourth Proportional to 21,581.96, 29,785.38 and 12,632.36

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Solution

The fourth proportional to 21,581.96, 29,785.38 and 12,632.36 is: 17,433.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,581.96 : 29,785.38 = 12,632.36 : x
  2. Step 2: Convert to fraction form
    21,581.96/29,785.38 = 12,632.36/x
  3. Step 3: Cross multiply
    21,581.96x = 29,785.38 × 12,632.36
  4. Step 4: Simplify right side
    21,581.96x = 376,259,642.90
  5. Step 5: Solve for x
    x = 376,259,642.90/21,581.96
  6. Step 6: Final answer
    x = 17,433.99

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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.