Home / 21,586.56-29,785.88-13,633.04

Finding the Fourth Proportional to 21,586.56, 29,785.88 and 13,633.04

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Solution

The fourth proportional to 21,586.56, 29,785.88 and 13,633.04 is: 18,811.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,586.56 : 29,785.88 = 13,633.04 : x
  2. Step 2: Convert to fraction form
    21,586.56/29,785.88 = 13,633.04/x
  3. Step 3: Cross multiply
    21,586.56x = 29,785.88 × 13,633.04
  4. Step 4: Simplify right side
    21,586.56x = 406,072,093.48
  5. Step 5: Solve for x
    x = 406,072,093.48/21,586.56
  6. Step 6: Final answer
    x = 18,811.34

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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.