Home / 20,215.60-30,310.36-8,525.68

Finding the Fourth Proportional to 20,215.60, 30,310.36 and 8,525.68

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Solution

The fourth proportional to 20,215.60, 30,310.36 and 8,525.68 is: 12,783.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.60 : 30,310.36 = 8,525.68 : x
  2. Step 2: Convert to fraction form
    20,215.60/30,310.36 = 8,525.68/x
  3. Step 3: Cross multiply
    20,215.60x = 30,310.36 × 8,525.68
  4. Step 4: Simplify right side
    20,215.60x = 258,416,430.04
  5. Step 5: Solve for x
    x = 258,416,430.04/20,215.60
  6. Step 6: Final answer
    x = 12,783.02

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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.