Home / 27,958.67-38,576.63-20,409.11

Finding the Fourth Proportional to 27,958.67, 38,576.63 and 20,409.11

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Solution

The fourth proportional to 27,958.67, 38,576.63 and 20,409.11 is: 28,159.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,958.67 : 38,576.63 = 20,409.11 : x
  2. Step 2: Convert to fraction form
    27,958.67/38,576.63 = 20,409.11/x
  3. Step 3: Cross multiply
    27,958.67x = 38,576.63 × 20,409.11
  4. Step 4: Simplify right side
    27,958.67x = 787,314,847.49
  5. Step 5: Solve for x
    x = 787,314,847.49/27,958.67
  6. Step 6: Final answer
    x = 28,159.95

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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.