Home / 12,456,643.20-18,684,964.80-7,738,051.20

Finding the Fourth Proportional to 12,456,643.20, 18,684,964.80 and 7,738,051.20

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Solution

The fourth proportional to 12,456,643.20, 18,684,964.80 and 7,738,051.20 is: 11,607,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456,643.20 : 18,684,964.80 = 7,738,051.20 : x
  2. Step 2: Convert to fraction form
    12,456,643.20/18,684,964.80 = 7,738,051.20/x
  3. Step 3: Cross multiply
    12,456,643.20x = 18,684,964.80 × 7,738,051.20
  4. Step 4: Simplify right side
    12,456,643.20x = 144,585,214,292,597.78
  5. Step 5: Solve for x
    x = 144,585,214,292,597.78/12,456,643.20
  6. Step 6: Final answer
    x = 11,607,076.80

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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.