Home / 21,208.41-31,805.15-6,211.40

Finding the Fourth Proportional to 21,208.41, 31,805.15 and 6,211.40

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Solution

The fourth proportional to 21,208.41, 31,805.15 and 6,211.40 is: 9,314.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.41 : 31,805.15 = 6,211.40 : x
  2. Step 2: Convert to fraction form
    21,208.41/31,805.15 = 6,211.40/x
  3. Step 3: Cross multiply
    21,208.41x = 31,805.15 × 6,211.40
  4. Step 4: Simplify right side
    21,208.41x = 197,554,318.63
  5. Step 5: Solve for x
    x = 197,554,318.63/21,208.41
  6. Step 6: Final answer
    x = 9,314.90

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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.