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Finding the Fourth Proportional to 21,613.58, 29,832.40 and 14,080.58

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Solution

The fourth proportional to 21,613.58, 29,832.40 and 14,080.58 is: 19,434.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,613.58 : 29,832.40 = 14,080.58 : x
  2. Step 2: Convert to fraction form
    21,613.58/29,832.40 = 14,080.58/x
  3. Step 3: Cross multiply
    21,613.58x = 29,832.40 × 14,080.58
  4. Step 4: Simplify right side
    21,613.58x = 420,057,494.79
  5. Step 5: Solve for x
    x = 420,057,494.79/21,613.58
  6. Step 6: Final answer
    x = 19,434.89

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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.