Home / 21,626.64-29,849.40-13,663.80

Finding the Fourth Proportional to 21,626.64, 29,849.40 and 13,663.80

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Solution

The fourth proportional to 21,626.64, 29,849.40 and 13,663.80 is: 18,858.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,626.64 : 29,849.40 = 13,663.80 : x
  2. Step 2: Convert to fraction form
    21,626.64/29,849.40 = 13,663.80/x
  3. Step 3: Cross multiply
    21,626.64x = 29,849.40 × 13,663.80
  4. Step 4: Simplify right side
    21,626.64x = 407,856,231.72
  5. Step 5: Solve for x
    x = 407,856,231.72/21,626.64
  6. Step 6: Final answer
    x = 18,858.97

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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.