Home / 21,323.09-29,437.89-14,786.39

Finding the Fourth Proportional to 21,323.09, 29,437.89 and 14,786.39

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Solution

The fourth proportional to 21,323.09, 29,437.89 and 14,786.39 is: 20,413.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,323.09 : 29,437.89 = 14,786.39 : x
  2. Step 2: Convert to fraction form
    21,323.09/29,437.89 = 14,786.39/x
  3. Step 3: Cross multiply
    21,323.09x = 29,437.89 × 14,786.39
  4. Step 4: Simplify right side
    21,323.09x = 435,279,975.13
  5. Step 5: Solve for x
    x = 435,279,975.13/21,323.09
  6. Step 6: Final answer
    x = 20,413.56

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1.5x scale

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.