Home / 19,785.87-27,297.05-12,983.65

Finding the Fourth Proportional to 19,785.87, 27,297.05 and 12,983.65

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Solution

The fourth proportional to 19,785.87, 27,297.05 and 12,983.65 is: 17,912.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,785.87 : 27,297.05 = 12,983.65 : x
  2. Step 2: Convert to fraction form
    19,785.87/27,297.05 = 12,983.65/x
  3. Step 3: Cross multiply
    19,785.87x = 27,297.05 × 12,983.65
  4. Step 4: Simplify right side
    19,785.87x = 354,415,210.07
  5. Step 5: Solve for x
    x = 354,415,210.07/19,785.87
  6. Step 6: Final answer
    x = 17,912.54

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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.