Home / 28,591,708.69-39,456,862.78-15,538,968.28

Finding the Fourth Proportional to 28,591,708.69, 39,456,862.78 and 15,538,968.28

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Solution

The fourth proportional to 28,591,708.69, 39,456,862.78 and 15,538,968.28 is: 21,443,941.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,591,708.69 : 39,456,862.78 = 15,538,968.28 : x
  2. Step 2: Convert to fraction form
    28,591,708.69/39,456,862.78 = 15,538,968.28/x
  3. Step 3: Cross multiply
    28,591,708.69x = 39,456,862.78 × 15,538,968.28
  4. Step 4: Simplify right side
    28,591,708.69x = 613,118,938,969,448.38
  5. Step 5: Solve for x
    x = 613,118,938,969,448.38/28,591,708.69
  6. Step 6: Final answer
    x = 21,443,941.87

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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.