Home / 21,965.95-30,312.87-11,894.18

Finding the Fourth Proportional to 21,965.95, 30,312.87 and 11,894.18

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Solution

The fourth proportional to 21,965.95, 30,312.87 and 11,894.18 is: 16,413.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.95 : 30,312.87 = 11,894.18 : x
  2. Step 2: Convert to fraction form
    21,965.95/30,312.87 = 11,894.18/x
  3. Step 3: Cross multiply
    21,965.95x = 30,312.87 × 11,894.18
  4. Step 4: Simplify right side
    21,965.95x = 360,546,580.53
  5. Step 5: Solve for x
    x = 360,546,580.53/21,965.95
  6. Step 6: Final answer
    x = 16,413.89

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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.