Home / 20,617,728.50-28,450,806.05-11,916,464.69

Finding the Fourth Proportional to 20,617,728.50, 28,450,806.05 and 11,916,464.69

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Solution

The fourth proportional to 20,617,728.50, 28,450,806.05 and 11,916,464.69 is: 16,443,762.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617,728.50 : 28,450,806.05 = 11,916,464.69 : x
  2. Step 2: Convert to fraction form
    20,617,728.50/28,450,806.05 = 11,916,464.69/x
  3. Step 3: Cross multiply
    20,617,728.50x = 28,450,806.05 × 11,916,464.69
  4. Step 4: Simplify right side
    20,617,728.50x = 339,033,025,495,027.06
  5. Step 5: Solve for x
    x = 339,033,025,495,027.06/20,617,728.50
  6. Step 6: Final answer
    x = 16,443,762.25

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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.