Home / 18,660,400.40-27,990,600.60-7,889,862.80

Finding the Fourth Proportional to 18,660,400.40, 27,990,600.60 and 7,889,862.80

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Solution

The fourth proportional to 18,660,400.40, 27,990,600.60 and 7,889,862.80 is: 11,834,794.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660,400.40 : 27,990,600.60 = 7,889,862.80 : x
  2. Step 2: Convert to fraction form
    18,660,400.40/27,990,600.60 = 7,889,862.80/x
  3. Step 3: Cross multiply
    18,660,400.40x = 27,990,600.60 × 7,889,862.80
  4. Step 4: Simplify right side
    18,660,400.40x = 220,841,998,423,597.69
  5. Step 5: Solve for x
    x = 220,841,998,423,597.69/18,660,400.40
  6. Step 6: Final answer
    x = 11,834,794.20

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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.