Home / 19,785.25-27,317.01-12,619.18

Finding the Fourth Proportional to 19,785.25, 27,317.01 and 12,619.18

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Solution

The fourth proportional to 19,785.25, 27,317.01 and 12,619.18 is: 17,422.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,785.25 : 27,317.01 = 12,619.18 : x
  2. Step 2: Convert to fraction form
    19,785.25/27,317.01 = 12,619.18/x
  3. Step 3: Cross multiply
    19,785.25x = 27,317.01 × 12,619.18
  4. Step 4: Simplify right side
    19,785.25x = 344,718,266.25
  5. Step 5: Solve for x
    x = 344,718,266.25/19,785.25
  6. Step 6: Final answer
    x = 17,422.99

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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.