Home / 14,403.20-21,561.60-8,556.80

Finding the Fourth Proportional to 14,403.20, 21,561.60 and 8,556.80

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Solution

The fourth proportional to 14,403.20, 21,561.60 and 8,556.80 is: 12,809.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,403.20 : 21,561.60 = 8,556.80 : x
  2. Step 2: Convert to fraction form
    14,403.20/21,561.60 = 8,556.80/x
  3. Step 3: Cross multiply
    14,403.20x = 21,561.60 × 8,556.80
  4. Step 4: Simplify right side
    14,403.20x = 184,498,298.88
  5. Step 5: Solve for x
    x = 184,498,298.88/14,403.20
  6. Step 6: Final answer
    x = 12,809.54

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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.