Home / 19,106.78-28,485.76-18,621.23

Finding the Fourth Proportional to 19,106.78, 28,485.76 and 18,621.23

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Solution

The fourth proportional to 19,106.78, 28,485.76 and 18,621.23 is: 27,761.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,106.78 : 28,485.76 = 18,621.23 : x
  2. Step 2: Convert to fraction form
    19,106.78/28,485.76 = 18,621.23/x
  3. Step 3: Cross multiply
    19,106.78x = 28,485.76 × 18,621.23
  4. Step 4: Simplify right side
    19,106.78x = 530,439,724.36
  5. Step 5: Solve for x
    x = 530,439,724.36/19,106.78
  6. Step 6: Final answer
    x = 27,761.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.