Home / 28,828,145.76-39,782,845.02-15,775,407.42

Finding the Fourth Proportional to 28,828,145.76, 39,782,845.02 and 15,775,407.42

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Solution

The fourth proportional to 28,828,145.76, 39,782,845.02 and 15,775,407.42 is: 21,770,064.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,828,145.76 : 39,782,845.02 = 15,775,407.42 : x
  2. Step 2: Convert to fraction form
    28,828,145.76/39,782,845.02 = 15,775,407.42/x
  3. Step 3: Cross multiply
    28,828,145.76x = 39,782,845.02 × 15,775,407.42
  4. Step 4: Simplify right side
    28,828,145.76x = 627,590,588,517,218.12
  5. Step 5: Solve for x
    x = 627,590,588,517,218.12/28,828,145.76
  6. Step 6: Final answer
    x = 21,770,064.36

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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.