Home / 28,458,600.42-39,272,823.14-15,405,855.86

Finding the Fourth Proportional to 28,458,600.42, 39,272,823.14 and 15,405,855.86

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Solution

The fourth proportional to 28,458,600.42, 39,272,823.14 and 15,405,855.86 is: 21,260,056.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,458,600.42 : 39,272,823.14 = 15,405,855.86 : x
  2. Step 2: Convert to fraction form
    28,458,600.42/39,272,823.14 = 15,405,855.86/x
  3. Step 3: Cross multiply
    28,458,600.42x = 39,272,823.14 × 15,405,855.86
  4. Step 4: Simplify right side
    28,458,600.42x = 605,031,452,510,112.62
  5. Step 5: Solve for x
    x = 605,031,452,510,112.62/28,458,600.42
  6. Step 6: Final answer
    x = 21,260,056.49

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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.