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Finding the Fourth Proportional to 19,922.51, 27,486.51 and 12,853.64

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Solution

The fourth proportional to 19,922.51, 27,486.51 and 12,853.64 is: 17,733.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,922.51 : 27,486.51 = 12,853.64 : x
  2. Step 2: Convert to fraction form
    19,922.51/27,486.51 = 12,853.64/x
  3. Step 3: Cross multiply
    19,922.51x = 27,486.51 × 12,853.64
  4. Step 4: Simplify right side
    19,922.51x = 353,301,724.91
  5. Step 5: Solve for x
    x = 353,301,724.91/19,922.51
  6. Step 6: Final answer
    x = 17,733.79

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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.