Home / 18,668.30-28,006.55-13,722.95

Finding the Fourth Proportional to 18,668.30, 28,006.55 and 13,722.95

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Solution

The fourth proportional to 18,668.30, 28,006.55 and 13,722.95 is: 20,587.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.30 : 28,006.55 = 13,722.95 : x
  2. Step 2: Convert to fraction form
    18,668.30/28,006.55 = 13,722.95/x
  3. Step 3: Cross multiply
    18,668.30x = 28,006.55 × 13,722.95
  4. Step 4: Simplify right side
    18,668.30x = 384,332,485.32
  5. Step 5: Solve for x
    x = 384,332,485.32/18,668.30
  6. Step 6: Final answer
    x = 20,587.44

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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.