Home / 21,313,313.20-31,969,969.80-7,848,391.60

Finding the Fourth Proportional to 21,313,313.20, 31,969,969.80 and 7,848,391.60

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Solution

The fourth proportional to 21,313,313.20, 31,969,969.80 and 7,848,391.60 is: 11,772,587.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313,313.20 : 31,969,969.80 = 7,848,391.60 : x
  2. Step 2: Convert to fraction form
    21,313,313.20/31,969,969.80 = 7,848,391.60/x
  3. Step 3: Cross multiply
    21,313,313.20x = 31,969,969.80 × 7,848,391.60
  4. Step 4: Simplify right side
    21,313,313.20x = 250,912,842,430,573.69
  5. Step 5: Solve for x
    x = 250,912,842,430,573.69/21,313,313.20
  6. Step 6: Final answer
    x = 11,772,587.40

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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.