Home / 20,805.67-31,216.16-14,929.46

Finding the Fourth Proportional to 20,805.67, 31,216.16 and 14,929.46

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Solution

The fourth proportional to 20,805.67, 31,216.16 and 14,929.46 is: 22,399.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,805.67 : 31,216.16 = 14,929.46 : x
  2. Step 2: Convert to fraction form
    20,805.67/31,216.16 = 14,929.46/x
  3. Step 3: Cross multiply
    20,805.67x = 31,216.16 × 14,929.46
  4. Step 4: Simplify right side
    20,805.67x = 466,040,255.99
  5. Step 5: Solve for x
    x = 466,040,255.99/20,805.67
  6. Step 6: Final answer
    x = 22,399.68

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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.