Home / 21,119.82-31,679.73-6,328.74

Finding the Fourth Proportional to 21,119.82, 31,679.73 and 6,328.74

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Solution

The fourth proportional to 21,119.82, 31,679.73 and 6,328.74 is: 9,493.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,119.82 : 31,679.73 = 6,328.74 : x
  2. Step 2: Convert to fraction form
    21,119.82/31,679.73 = 6,328.74/x
  3. Step 3: Cross multiply
    21,119.82x = 31,679.73 × 6,328.74
  4. Step 4: Simplify right side
    21,119.82x = 200,492,717.54
  5. Step 5: Solve for x
    x = 200,492,717.54/21,119.82
  6. Step 6: Final answer
    x = 9,493.11

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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.