Home / 20,464.10-30,717.21-12,691.34

Finding the Fourth Proportional to 20,464.10, 30,717.21 and 12,691.34

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Solution

The fourth proportional to 20,464.10, 30,717.21 and 12,691.34 is: 19,050.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,464.10 : 30,717.21 = 12,691.34 : x
  2. Step 2: Convert to fraction form
    20,464.10/30,717.21 = 12,691.34/x
  3. Step 3: Cross multiply
    20,464.10x = 30,717.21 × 12,691.34
  4. Step 4: Simplify right side
    20,464.10x = 389,842,555.96
  5. Step 5: Solve for x
    x = 389,842,555.96/20,464.10
  6. Step 6: Final answer
    x = 19,050.07

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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.