Home / 21,122.78-29,116.26-14,036.90

Finding the Fourth Proportional to 21,122.78, 29,116.26 and 14,036.90

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Solution

The fourth proportional to 21,122.78, 29,116.26 and 14,036.90 is: 19,348.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122.78 : 29,116.26 = 14,036.90 : x
  2. Step 2: Convert to fraction form
    21,122.78/29,116.26 = 14,036.90/x
  3. Step 3: Cross multiply
    21,122.78x = 29,116.26 × 14,036.90
  4. Step 4: Simplify right side
    21,122.78x = 408,701,884.41
  5. Step 5: Solve for x
    x = 408,701,884.41/21,122.78
  6. Step 6: Final answer
    x = 19,348.87

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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.