Home / 28,074.27-38,696.33-19,900.61

Finding the Fourth Proportional to 28,074.27, 38,696.33 and 19,900.61

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Solution

The fourth proportional to 28,074.27, 38,696.33 and 19,900.61 is: 27,430.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,074.27 : 38,696.33 = 19,900.61 : x
  2. Step 2: Convert to fraction form
    28,074.27/38,696.33 = 19,900.61/x
  3. Step 3: Cross multiply
    28,074.27x = 38,696.33 × 19,900.61
  4. Step 4: Simplify right side
    28,074.27x = 770,080,681.98
  5. Step 5: Solve for x
    x = 770,080,681.98/28,074.27
  6. Step 6: Final answer
    x = 27,430.12

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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.