Home / 21,965.62-30,312.57-11,894.06

Finding the Fourth Proportional to 21,965.62, 30,312.57 and 11,894.06

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Solution

The fourth proportional to 21,965.62, 30,312.57 and 11,894.06 is: 16,413.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.62 : 30,312.57 = 11,894.06 : x
  2. Step 2: Convert to fraction form
    21,965.62/30,312.57 = 11,894.06/x
  3. Step 3: Cross multiply
    21,965.62x = 30,312.57 × 11,894.06
  4. Step 4: Simplify right side
    21,965.62x = 360,539,602.12
  5. Step 5: Solve for x
    x = 360,539,602.12/21,965.62
  6. Step 6: Final answer
    x = 16,413.82

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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.