Home / 12,889,556.88-17,782,554.16-7,379,987.20

Finding the Fourth Proportional to 12,889,556.88, 17,782,554.16 and 7,379,987.20

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Solution

The fourth proportional to 12,889,556.88, 17,782,554.16 and 7,379,987.20 is: 10,181,499.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889,556.88 : 17,782,554.16 = 7,379,987.20 : x
  2. Step 2: Convert to fraction form
    12,889,556.88/17,782,554.16 = 7,379,987.20/x
  3. Step 3: Cross multiply
    12,889,556.88x = 17,782,554.16 × 7,379,987.20
  4. Step 4: Simplify right side
    12,889,556.88x = 131,235,022,084,106.75
  5. Step 5: Solve for x
    x = 131,235,022,084,106.75/12,889,556.88
  6. Step 6: Final answer
    x = 10,181,499.90

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1.5x scale

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.