Home / 21,636.10-29,853.12-14,081.64

Finding the Fourth Proportional to 21,636.10, 29,853.12 and 14,081.64

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Solution

The fourth proportional to 21,636.10, 29,853.12 and 14,081.64 is: 19,429.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,636.10 : 29,853.12 = 14,081.64 : x
  2. Step 2: Convert to fraction form
    21,636.10/29,853.12 = 14,081.64/x
  3. Step 3: Cross multiply
    21,636.10x = 29,853.12 × 14,081.64
  4. Step 4: Simplify right side
    21,636.10x = 420,380,888.72
  5. Step 5: Solve for x
    x = 420,380,888.72/21,636.10
  6. Step 6: Final answer
    x = 19,429.61

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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.