Home / 21,072.09-31,607.82-6,281.07

Finding the Fourth Proportional to 21,072.09, 31,607.82 and 6,281.07

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Solution

The fourth proportional to 21,072.09, 31,607.82 and 6,281.07 is: 9,421.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.09 : 31,607.82 = 6,281.07 : x
  2. Step 2: Convert to fraction form
    21,072.09/31,607.82 = 6,281.07/x
  3. Step 3: Cross multiply
    21,072.09x = 31,607.82 × 6,281.07
  4. Step 4: Simplify right side
    21,072.09x = 198,530,929.97
  5. Step 5: Solve for x
    x = 198,530,929.97/21,072.09
  6. Step 6: Final answer
    x = 9,421.51

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1.5x scale

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.