Home / 21,965.52-30,312.50-11,894.07

Finding the Fourth Proportional to 21,965.52, 30,312.50 and 11,894.07

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Solution

The fourth proportional to 21,965.52, 30,312.50 and 11,894.07 is: 16,413.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.52 : 30,312.50 = 11,894.07 : x
  2. Step 2: Convert to fraction form
    21,965.52/30,312.50 = 11,894.07/x
  3. Step 3: Cross multiply
    21,965.52x = 30,312.50 × 11,894.07
  4. Step 4: Simplify right side
    21,965.52x = 360,538,996.88
  5. Step 5: Solve for x
    x = 360,538,996.88/21,965.52
  6. Step 6: Final answer
    x = 16,413.86

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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.