Home / 28,751,830.89-39,678,344.15-15,699,918.57

Finding the Fourth Proportional to 28,751,830.89, 39,678,344.15 and 15,699,918.57

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Solution

The fourth proportional to 28,751,830.89, 39,678,344.15 and 15,699,918.57 is: 21,666,334.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,751,830.89 : 39,678,344.15 = 15,699,918.57 : x
  2. Step 2: Convert to fraction form
    28,751,830.89/39,678,344.15 = 15,699,918.57/x
  3. Step 3: Cross multiply
    28,751,830.89x = 39,678,344.15 × 15,699,918.57
  4. Step 4: Simplify right side
    28,751,830.89x = 622,946,772,068,936.38
  5. Step 5: Solve for x
    x = 622,946,772,068,936.38/28,751,830.89
  6. Step 6: Final answer
    x = 21,666,334.03

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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.