Home / 27,986.56-38,619.84-16,806.40

Finding the Fourth Proportional to 27,986.56, 38,619.84 and 16,806.40

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Solution

The fourth proportional to 27,986.56, 38,619.84 and 16,806.40 is: 23,191.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,986.56 : 38,619.84 = 16,806.40 : x
  2. Step 2: Convert to fraction form
    27,986.56/38,619.84 = 16,806.40/x
  3. Step 3: Cross multiply
    27,986.56x = 38,619.84 × 16,806.40
  4. Step 4: Simplify right side
    27,986.56x = 649,060,478.98
  5. Step 5: Solve for x
    x = 649,060,478.98/27,986.56
  6. Step 6: Final answer
    x = 23,191.86

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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.