Home / 21,174.21-31,771.74-14,974.07

Finding the Fourth Proportional to 21,174.21, 31,771.74 and 14,974.07

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Solution

The fourth proportional to 21,174.21, 31,771.74 and 14,974.07 is: 22,468.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.21 : 31,771.74 = 14,974.07 : x
  2. Step 2: Convert to fraction form
    21,174.21/31,771.74 = 14,974.07/x
  3. Step 3: Cross multiply
    21,174.21x = 31,771.74 × 14,974.07
  4. Step 4: Simplify right side
    21,174.21x = 475,752,156.08
  5. Step 5: Solve for x
    x = 475,752,156.08/21,174.21
  6. Step 6: Final answer
    x = 22,468.47

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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.