Home / 21,212.22-29,259.42-13,668.42

Finding the Fourth Proportional to 21,212.22, 29,259.42 and 13,668.42

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Solution

The fourth proportional to 21,212.22, 29,259.42 and 13,668.42 is: 18,853.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.22 : 29,259.42 = 13,668.42 : x
  2. Step 2: Convert to fraction form
    21,212.22/29,259.42 = 13,668.42/x
  3. Step 3: Cross multiply
    21,212.22x = 29,259.42 × 13,668.42
  4. Step 4: Simplify right side
    21,212.22x = 399,930,041.52
  5. Step 5: Solve for x
    x = 399,930,041.52/21,212.22
  6. Step 6: Final answer
    x = 18,853.76

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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.