Home / 21,971.00-30,319.59-11,899.35

Finding the Fourth Proportional to 21,971.00, 30,319.59 and 11,899.35

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Solution

The fourth proportional to 21,971.00, 30,319.59 and 11,899.35 is: 16,420.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,971.00 : 30,319.59 = 11,899.35 : x
  2. Step 2: Convert to fraction form
    21,971.00/30,319.59 = 11,899.35/x
  3. Step 3: Cross multiply
    21,971.00x = 30,319.59 × 11,899.35
  4. Step 4: Simplify right side
    21,971.00x = 360,783,413.27
  5. Step 5: Solve for x
    x = 360,783,413.27/21,971.00
  6. Step 6: Final answer
    x = 16,420.90

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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.