Home / 21,633.51-29,837.45-13,672.83

Finding the Fourth Proportional to 21,633.51, 29,837.45 and 13,672.83

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Solution

The fourth proportional to 21,633.51, 29,837.45 and 13,672.83 is: 18,857.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,633.51 : 29,837.45 = 13,672.83 : x
  2. Step 2: Convert to fraction form
    21,633.51/29,837.45 = 13,672.83/x
  3. Step 3: Cross multiply
    21,633.51x = 29,837.45 × 13,672.83
  4. Step 4: Simplify right side
    21,633.51x = 407,962,313.12
  5. Step 5: Solve for x
    x = 407,962,313.12/21,633.51
  6. Step 6: Final answer
    x = 18,857.89

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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.