Home / 21,606.22-29,820.45-12,653.20

Finding the Fourth Proportional to 21,606.22, 29,820.45 and 12,653.20

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Solution

The fourth proportional to 21,606.22, 29,820.45 and 12,653.20 is: 17,463.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,606.22 : 29,820.45 = 12,653.20 : x
  2. Step 2: Convert to fraction form
    21,606.22/29,820.45 = 12,653.20/x
  3. Step 3: Cross multiply
    21,606.22x = 29,820.45 × 12,653.20
  4. Step 4: Simplify right side
    21,606.22x = 377,324,117.94
  5. Step 5: Solve for x
    x = 377,324,117.94/21,606.22
  6. Step 6: Final answer
    x = 17,463.68

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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.