Home / 21,965.40-30,312.32-11,893.98

Finding the Fourth Proportional to 21,965.40, 30,312.32 and 11,893.98

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Solution

The fourth proportional to 21,965.40, 30,312.32 and 11,893.98 is: 16,413.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.40 : 30,312.32 = 11,893.98 : x
  2. Step 2: Convert to fraction form
    21,965.40/30,312.32 = 11,893.98/x
  3. Step 3: Cross multiply
    21,965.40x = 30,312.32 × 11,893.98
  4. Step 4: Simplify right side
    21,965.40x = 360,534,127.83
  5. Step 5: Solve for x
    x = 360,534,127.83/21,965.40
  6. Step 6: Final answer
    x = 16,413.73

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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.