Home / 21,137.34-31,706.32-10,045.14

Finding the Fourth Proportional to 21,137.34, 31,706.32 and 10,045.14

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Solution

The fourth proportional to 21,137.34, 31,706.32 and 10,045.14 is: 15,067.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.34 : 31,706.32 = 10,045.14 : x
  2. Step 2: Convert to fraction form
    21,137.34/31,706.32 = 10,045.14/x
  3. Step 3: Cross multiply
    21,137.34x = 31,706.32 × 10,045.14
  4. Step 4: Simplify right side
    21,137.34x = 318,494,423.28
  5. Step 5: Solve for x
    x = 318,494,423.28/21,137.34
  6. Step 6: Final answer
    x = 15,067.86

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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.