Home / 21,282.99-31,926.66-8,146.41

Finding the Fourth Proportional to 21,282.99, 31,926.66 and 8,146.41

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Solution

The fourth proportional to 21,282.99, 31,926.66 and 8,146.41 is: 12,220.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.99 : 31,926.66 = 8,146.41 : x
  2. Step 2: Convert to fraction form
    21,282.99/31,926.66 = 8,146.41/x
  3. Step 3: Cross multiply
    21,282.99x = 31,926.66 × 8,146.41
  4. Step 4: Simplify right side
    21,282.99x = 260,087,662.29
  5. Step 5: Solve for x
    x = 260,087,662.29/21,282.99
  6. Step 6: Final answer
    x = 12,220.45

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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.