Home / 20,530.08-30,795.12-8,226.72

Finding the Fourth Proportional to 20,530.08, 30,795.12 and 8,226.72

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Solution

The fourth proportional to 20,530.08, 30,795.12 and 8,226.72 is: 12,340.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.08 : 30,795.12 = 8,226.72 : x
  2. Step 2: Convert to fraction form
    20,530.08/30,795.12 = 8,226.72/x
  3. Step 3: Cross multiply
    20,530.08x = 30,795.12 × 8,226.72
  4. Step 4: Simplify right side
    20,530.08x = 253,342,829.61
  5. Step 5: Solve for x
    x = 253,342,829.61/20,530.08
  6. Step 6: Final answer
    x = 12,340.08

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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.