Home / 20,617,730.79-28,450,809.21-11,916,466.98

Finding the Fourth Proportional to 20,617,730.79, 28,450,809.21 and 11,916,466.98

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Solution

The fourth proportional to 20,617,730.79, 28,450,809.21 and 11,916,466.98 is: 16,443,765.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617,730.79 : 28,450,809.21 = 11,916,466.98 : x
  2. Step 2: Convert to fraction form
    20,617,730.79/28,450,809.21 = 11,916,466.98/x
  3. Step 3: Cross multiply
    20,617,730.79x = 28,450,809.21 × 11,916,466.98
  4. Step 4: Simplify right side
    20,617,730.79x = 339,033,128,376,211
  5. Step 5: Solve for x
    x = 339,033,128,376,211/20,617,730.79
  6. Step 6: Final answer
    x = 16,443,765.41

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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.