Home / 20,983,532.76-31,440,502.22-12,761,304.96

Finding the Fourth Proportional to 20,983,532.76, 31,440,502.22 and 12,761,304.96

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Solution

The fourth proportional to 20,983,532.76, 31,440,502.22 and 12,761,304.96 is: 19,120,795.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983,532.76 : 31,440,502.22 = 12,761,304.96 : x
  2. Step 2: Convert to fraction form
    20,983,532.76/31,440,502.22 = 12,761,304.96/x
  3. Step 3: Cross multiply
    20,983,532.76x = 31,440,502.22 × 12,761,304.96
  4. Step 4: Simplify right side
    20,983,532.76x = 401,221,836,924,977
  5. Step 5: Solve for x
    x = 401,221,836,924,977/20,983,532.76
  6. Step 6: Final answer
    x = 19,120,795.41

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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.