Home / 19,855.16-29,789.66-13,218.32

Finding the Fourth Proportional to 19,855.16, 29,789.66 and 13,218.32

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Solution

The fourth proportional to 19,855.16, 29,789.66 and 13,218.32 is: 19,832.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.16 : 29,789.66 = 13,218.32 : x
  2. Step 2: Convert to fraction form
    19,855.16/29,789.66 = 13,218.32/x
  3. Step 3: Cross multiply
    19,855.16x = 29,789.66 × 13,218.32
  4. Step 4: Simplify right side
    19,855.16x = 393,769,258.57
  5. Step 5: Solve for x
    x = 393,769,258.57/19,855.16
  6. Step 6: Final answer
    x = 19,832.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.