Home / 20,963.99-31,466.64-15,401.72

Finding the Fourth Proportional to 20,963.99, 31,466.64 and 15,401.72

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Solution

The fourth proportional to 20,963.99, 31,466.64 and 15,401.72 is: 23,117.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.99 : 31,466.64 = 15,401.72 : x
  2. Step 2: Convert to fraction form
    20,963.99/31,466.64 = 15,401.72/x
  3. Step 3: Cross multiply
    20,963.99x = 31,466.64 × 15,401.72
  4. Step 4: Simplify right side
    20,963.99x = 484,640,378.62
  5. Step 5: Solve for x
    x = 484,640,378.62/20,963.99
  6. Step 6: Final answer
    x = 23,117.75

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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.