Home / 20,761,733.80-31,142,600.70-12,116,960.20

Finding the Fourth Proportional to 20,761,733.80, 31,142,600.70 and 12,116,960.20

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Solution

The fourth proportional to 20,761,733.80, 31,142,600.70 and 12,116,960.20 is: 18,175,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761,733.80 : 31,142,600.70 = 12,116,960.20 : x
  2. Step 2: Convert to fraction form
    20,761,733.80/31,142,600.70 = 12,116,960.20/x
  3. Step 3: Cross multiply
    20,761,733.80x = 31,142,600.70 × 12,116,960.20
  4. Step 4: Simplify right side
    20,761,733.80x = 377,353,653,206,392.12
  5. Step 5: Solve for x
    x = 377,353,653,206,392.12/20,761,733.80
  6. Step 6: Final answer
    x = 18,175,440.30

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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.