Home / 20,630.85-30,946.38-8,782.95

Finding the Fourth Proportional to 20,630.85, 30,946.38 and 8,782.95

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Solution

The fourth proportional to 20,630.85, 30,946.38 and 8,782.95 is: 13,174.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.85 : 30,946.38 = 8,782.95 : x
  2. Step 2: Convert to fraction form
    20,630.85/30,946.38 = 8,782.95/x
  3. Step 3: Cross multiply
    20,630.85x = 30,946.38 × 8,782.95
  4. Step 4: Simplify right side
    20,630.85x = 271,800,508.22
  5. Step 5: Solve for x
    x = 271,800,508.22/20,630.85
  6. Step 6: Final answer
    x = 13,174.47

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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.