Home / 20,208.60-30,327.30-8,530.20

Finding the Fourth Proportional to 20,208.60, 30,327.30 and 8,530.20

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Solution

The fourth proportional to 20,208.60, 30,327.30 and 8,530.20 is: 12,801.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.60 : 30,327.30 = 8,530.20 : x
  2. Step 2: Convert to fraction form
    20,208.60/30,327.30 = 8,530.20/x
  3. Step 3: Cross multiply
    20,208.60x = 30,327.30 × 8,530.20
  4. Step 4: Simplify right side
    20,208.60x = 258,697,934.46
  5. Step 5: Solve for x
    x = 258,697,934.46/20,208.60
  6. Step 6: Final answer
    x = 12,801.38

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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.