Home / 21,206,721.40-31,819,413.30-9,841,319.80

Finding the Fourth Proportional to 21,206,721.40, 31,819,413.30 and 9,841,319.80

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Solution

The fourth proportional to 21,206,721.40, 31,819,413.30 and 9,841,319.80 is: 14,766,309.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,206,721.40 : 31,819,413.30 = 9,841,319.80 : x
  2. Step 2: Convert to fraction form
    21,206,721.40/31,819,413.30 = 9,841,319.80/x
  3. Step 3: Cross multiply
    21,206,721.40x = 31,819,413.30 × 9,841,319.80
  4. Step 4: Simplify right side
    21,206,721.40x = 313,145,022,133,673.38
  5. Step 5: Solve for x
    x = 313,145,022,133,673.38/21,206,721.40
  6. Step 6: Final answer
    x = 14,766,309.99

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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.