Home / 21,212.64-29,272.89-11,780.59

Finding the Fourth Proportional to 21,212.64, 29,272.89 and 11,780.59

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Solution

The fourth proportional to 21,212.64, 29,272.89 and 11,780.59 is: 16,256.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.64 : 29,272.89 = 11,780.59 : x
  2. Step 2: Convert to fraction form
    21,212.64/29,272.89 = 11,780.59/x
  3. Step 3: Cross multiply
    21,212.64x = 29,272.89 × 11,780.59
  4. Step 4: Simplify right side
    21,212.64x = 344,851,915.21
  5. Step 5: Solve for x
    x = 344,851,915.21/21,212.64
  6. Step 6: Final answer
    x = 16,256.91

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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.