Home / 20,809,791.56-31,152,496.08-12,587,550.72

Finding the Fourth Proportional to 20,809,791.56, 31,152,496.08 and 12,587,550.72

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Solution

The fourth proportional to 20,809,791.56, 31,152,496.08 and 12,587,550.72 is: 18,843,707.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809,791.56 : 31,152,496.08 = 12,587,550.72 : x
  2. Step 2: Convert to fraction form
    20,809,791.56/31,152,496.08 = 12,587,550.72/x
  3. Step 3: Cross multiply
    20,809,791.56x = 31,152,496.08 × 12,587,550.72
  4. Step 4: Simplify right side
    20,809,791.56x = 392,133,624,461,601.19
  5. Step 5: Solve for x
    x = 392,133,624,461,601.19/20,809,791.56
  6. Step 6: Final answer
    x = 18,843,707.46

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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.