Home / 21,392.48-29,512.68-16,668.56

Finding the Fourth Proportional to 21,392.48, 29,512.68 and 16,668.56

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Solution

The fourth proportional to 21,392.48, 29,512.68 and 16,668.56 is: 22,995.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,392.48 : 29,512.68 = 16,668.56 : x
  2. Step 2: Convert to fraction form
    21,392.48/29,512.68 = 16,668.56/x
  3. Step 3: Cross multiply
    21,392.48x = 29,512.68 × 16,668.56
  4. Step 4: Simplify right side
    21,392.48x = 491,933,877.34
  5. Step 5: Solve for x
    x = 491,933,877.34/21,392.48
  6. Step 6: Final answer
    x = 22,995.65

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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.