Home / 21,606.72-29,821.14-12,653.70

Finding the Fourth Proportional to 21,606.72, 29,821.14 and 12,653.70

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Solution

The fourth proportional to 21,606.72, 29,821.14 and 12,653.70 is: 17,464.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,606.72 : 29,821.14 = 12,653.70 : x
  2. Step 2: Convert to fraction form
    21,606.72/29,821.14 = 12,653.70/x
  3. Step 3: Cross multiply
    21,606.72x = 29,821.14 × 12,653.70
  4. Step 4: Simplify right side
    21,606.72x = 377,347,759.22
  5. Step 5: Solve for x
    x = 377,347,759.22/21,606.72
  6. Step 6: Final answer
    x = 17,464.37

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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.