Home / 20,213.60-30,307.36-8,523.68

Finding the Fourth Proportional to 20,213.60, 30,307.36 and 8,523.68

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Solution

The fourth proportional to 20,213.60, 30,307.36 and 8,523.68 is: 12,780.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213.60 : 30,307.36 = 8,523.68 : x
  2. Step 2: Convert to fraction form
    20,213.60/30,307.36 = 8,523.68/x
  3. Step 3: Cross multiply
    20,213.60x = 30,307.36 × 8,523.68
  4. Step 4: Simplify right side
    20,213.60x = 258,330,238.28
  5. Step 5: Solve for x
    x = 258,330,238.28/20,213.60
  6. Step 6: Final answer
    x = 12,780.02

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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.