Home / 19,247.12-28,661.62-18,728.72

Finding the Fourth Proportional to 19,247.12, 28,661.62 and 18,728.72

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Solution

The fourth proportional to 19,247.12, 28,661.62 and 18,728.72 is: 27,889.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,247.12 : 28,661.62 = 18,728.72 : x
  2. Step 2: Convert to fraction form
    19,247.12/28,661.62 = 18,728.72/x
  3. Step 3: Cross multiply
    19,247.12x = 28,661.62 × 18,728.72
  4. Step 4: Simplify right side
    19,247.12x = 536,795,455.73
  5. Step 5: Solve for x
    x = 536,795,455.73/19,247.12
  6. Step 6: Final answer
    x = 27,889.65

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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.