Home / 20,613,228.30-30,919,842.45-12,960,477.90

Finding the Fourth Proportional to 20,613,228.30, 30,919,842.45 and 12,960,477.90

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Solution

The fourth proportional to 20,613,228.30, 30,919,842.45 and 12,960,477.90 is: 19,440,716.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613,228.30 : 30,919,842.45 = 12,960,477.90 : x
  2. Step 2: Convert to fraction form
    20,613,228.30/30,919,842.45 = 12,960,477.90/x
  3. Step 3: Cross multiply
    20,613,228.30x = 30,919,842.45 × 12,960,477.90
  4. Step 4: Simplify right side
    20,613,228.30x = 400,735,934,744,706.88
  5. Step 5: Solve for x
    x = 400,735,934,744,706.88/20,613,228.30
  6. Step 6: Final answer
    x = 19,440,716.85

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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.