Home / 20,961.63-31,345.25-16,227.99

Finding the Fourth Proportional to 20,961.63, 31,345.25 and 16,227.99

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Solution

The fourth proportional to 20,961.63, 31,345.25 and 16,227.99 is: 24,266.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.63 : 31,345.25 = 16,227.99 : x
  2. Step 2: Convert to fraction form
    20,961.63/31,345.25 = 16,227.99/x
  3. Step 3: Cross multiply
    20,961.63x = 31,345.25 × 16,227.99
  4. Step 4: Simplify right side
    20,961.63x = 508,670,322.41
  5. Step 5: Solve for x
    x = 508,670,322.41/20,961.63
  6. Step 6: Final answer
    x = 24,266.74

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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.