Home / 28,775,180.61-39,710,028.15-15,722,438.31

Finding the Fourth Proportional to 28,775,180.61, 39,710,028.15 and 15,722,438.31

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Solution

The fourth proportional to 28,775,180.61, 39,710,028.15 and 15,722,438.31 is: 21,697,117.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,775,180.61 : 39,710,028.15 = 15,722,438.31 : x
  2. Step 2: Convert to fraction form
    28,775,180.61/39,710,028.15 = 15,722,438.31/x
  3. Step 3: Cross multiply
    28,775,180.61x = 39,710,028.15 × 15,722,438.31
  4. Step 4: Simplify right side
    28,775,180.61x = 624,338,467,876,738.38
  5. Step 5: Solve for x
    x = 624,338,467,876,738.38/28,775,180.61
  6. Step 6: Final answer
    x = 21,697,117.26

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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.