Home / 28,913,485-39,900,669.78-15,860,849.26

Finding the Fourth Proportional to 28,913,485, 39,900,669.78 and 15,860,849.26

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Solution

The fourth proportional to 28,913,485, 39,900,669.78 and 15,860,849.26 is: 21,888,005.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,913,485 : 39,900,669.78 = 15,860,849.26 : x
  2. Step 2: Convert to fraction form
    28,913,485/39,900,669.78 = 15,860,849.26/x
  3. Step 3: Cross multiply
    28,913,485x = 39,900,669.78 × 15,860,849.26
  4. Step 4: Simplify right side
    28,913,485x = 632,858,508,753,617.38
  5. Step 5: Solve for x
    x = 632,858,508,753,617.38/28,913,485
  6. Step 6: Final answer
    x = 21,888,005.16

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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.