Home / 20,620.95-28,455.48-11,668.23

Finding the Fourth Proportional to 20,620.95, 28,455.48 and 11,668.23

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Solution

The fourth proportional to 20,620.95, 28,455.48 and 11,668.23 is: 16,101.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.95 : 28,455.48 = 11,668.23 : x
  2. Step 2: Convert to fraction form
    20,620.95/28,455.48 = 11,668.23/x
  3. Step 3: Cross multiply
    20,620.95x = 28,455.48 × 11,668.23
  4. Step 4: Simplify right side
    20,620.95x = 332,025,085.40
  5. Step 5: Solve for x
    x = 332,025,085.40/20,620.95
  6. Step 6: Final answer
    x = 16,101.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.