Home / 21,137.36-31,706.30-10,045.13

Finding the Fourth Proportional to 21,137.36, 31,706.30 and 10,045.13

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Solution

The fourth proportional to 21,137.36, 31,706.30 and 10,045.13 is: 15,067.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.36 : 31,706.30 = 10,045.13 : x
  2. Step 2: Convert to fraction form
    21,137.36/31,706.30 = 10,045.13/x
  3. Step 3: Cross multiply
    21,137.36x = 31,706.30 × 10,045.13
  4. Step 4: Simplify right side
    21,137.36x = 318,493,771.90
  5. Step 5: Solve for x
    x = 318,493,771.90/21,137.36
  6. Step 6: Final answer
    x = 15,067.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.