Home / 20,308.66-28,014.69-11,809.85

Finding the Fourth Proportional to 20,308.66, 28,014.69 and 11,809.85

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Solution

The fourth proportional to 20,308.66, 28,014.69 and 11,809.85 is: 16,291.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.66 : 28,014.69 = 11,809.85 : x
  2. Step 2: Convert to fraction form
    20,308.66/28,014.69 = 11,809.85/x
  3. Step 3: Cross multiply
    20,308.66x = 28,014.69 × 11,809.85
  4. Step 4: Simplify right side
    20,308.66x = 330,849,219.88
  5. Step 5: Solve for x
    x = 330,849,219.88/20,308.66
  6. Step 6: Final answer
    x = 16,291.04

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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.