Home / 12,128,534.40-18,192,801.60-4,945,223.55

Finding the Fourth Proportional to 12,128,534.40, 18,192,801.60 and 4,945,223.55

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Solution

The fourth proportional to 12,128,534.40, 18,192,801.60 and 4,945,223.55 is: 7,417,835.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,534.40 : 18,192,801.60 = 4,945,223.55 : x
  2. Step 2: Convert to fraction form
    12,128,534.40/18,192,801.60 = 4,945,223.55/x
  3. Step 3: Cross multiply
    12,128,534.40x = 18,192,801.60 × 4,945,223.55
  4. Step 4: Simplify right side
    12,128,534.40x = 89,967,470,912,797.69
  5. Step 5: Solve for x
    x = 89,967,470,912,797.69/12,128,534.40
  6. Step 6: Final answer
    x = 7,417,835.33

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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.