Home / 21,806.27-30,084.77-12,369.36

Finding the Fourth Proportional to 21,806.27, 30,084.77 and 12,369.36

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Solution

The fourth proportional to 21,806.27, 30,084.77 and 12,369.36 is: 17,065.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,806.27 : 30,084.77 = 12,369.36 : x
  2. Step 2: Convert to fraction form
    21,806.27/30,084.77 = 12,369.36/x
  3. Step 3: Cross multiply
    21,806.27x = 30,084.77 × 12,369.36
  4. Step 4: Simplify right side
    21,806.27x = 372,129,288.80
  5. Step 5: Solve for x
    x = 372,129,288.80/21,806.27
  6. Step 6: Final answer
    x = 17,065.25

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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.