Home / 20,947,948.45-28,907,714.97-12,127,771.37

Finding the Fourth Proportional to 20,947,948.45, 28,907,714.97 and 12,127,771.37

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Solution

The fourth proportional to 20,947,948.45, 28,907,714.97 and 12,127,771.37 is: 16,736,061.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947,948.45 : 28,907,714.97 = 12,127,771.37 : x
  2. Step 2: Convert to fraction form
    20,947,948.45/28,907,714.97 = 12,127,771.37/x
  3. Step 3: Cross multiply
    20,947,948.45x = 28,907,714.97 × 12,127,771.37
  4. Step 4: Simplify right side
    20,947,948.45x = 350,586,158,057,555.69
  5. Step 5: Solve for x
    x = 350,586,158,057,555.69/20,947,948.45
  6. Step 6: Final answer
    x = 16,736,061.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.