Home / 21,137.46-31,669.58-11,127.40

Finding the Fourth Proportional to 21,137.46, 31,669.58 and 11,127.40

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Solution

The fourth proportional to 21,137.46, 31,669.58 and 11,127.40 is: 16,671.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.46 : 31,669.58 = 11,127.40 : x
  2. Step 2: Convert to fraction form
    21,137.46/31,669.58 = 11,127.40/x
  3. Step 3: Cross multiply
    21,137.46x = 31,669.58 × 11,127.40
  4. Step 4: Simplify right side
    21,137.46x = 352,400,084.49
  5. Step 5: Solve for x
    x = 352,400,084.49/21,137.46
  6. Step 6: Final answer
    x = 16,671.83

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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.