Home / 21,630.51-29,833.31-13,669.83

Finding the Fourth Proportional to 21,630.51, 29,833.31 and 13,669.83

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Solution

The fourth proportional to 21,630.51, 29,833.31 and 13,669.83 is: 18,853.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,630.51 : 29,833.31 = 13,669.83 : x
  2. Step 2: Convert to fraction form
    21,630.51/29,833.31 = 13,669.83/x
  3. Step 3: Cross multiply
    21,630.51x = 29,833.31 × 13,669.83
  4. Step 4: Simplify right side
    21,630.51x = 407,816,310.21
  5. Step 5: Solve for x
    x = 407,816,310.21/21,630.51
  6. Step 6: Final answer
    x = 18,853.75

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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.