Home / 21,109,537.81-31,684,782.42-10,187,413.79

Finding the Fourth Proportional to 21,109,537.81, 31,684,782.42 and 10,187,413.79

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Solution

The fourth proportional to 21,109,537.81, 31,684,782.42 and 10,187,413.79 is: 15,291,002.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,109,537.81 : 31,684,782.42 = 10,187,413.79 : x
  2. Step 2: Convert to fraction form
    21,109,537.81/31,684,782.42 = 10,187,413.79/x
  3. Step 3: Cross multiply
    21,109,537.81x = 31,684,782.42 × 10,187,413.79
  4. Step 4: Simplify right side
    21,109,537.81x = 322,785,989,307,720.44
  5. Step 5: Solve for x
    x = 322,785,989,307,720.44/21,109,537.81
  6. Step 6: Final answer
    x = 15,291,002.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.