Home / 21,316.32-29,413.13-11,884.95

Finding the Fourth Proportional to 21,316.32, 29,413.13 and 11,884.95

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Solution

The fourth proportional to 21,316.32, 29,413.13 and 11,884.95 is: 16,399.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.32 : 29,413.13 = 11,884.95 : x
  2. Step 2: Convert to fraction form
    21,316.32/29,413.13 = 11,884.95/x
  3. Step 3: Cross multiply
    21,316.32x = 29,413.13 × 11,884.95
  4. Step 4: Simplify right side
    21,316.32x = 349,573,519.97
  5. Step 5: Solve for x
    x = 349,573,519.97/21,316.32
  6. Step 6: Final answer
    x = 16,399.34

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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.