Home / 21,794.22-30,071.38-12,838.45

Finding the Fourth Proportional to 21,794.22, 30,071.38 and 12,838.45

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Solution

The fourth proportional to 21,794.22, 30,071.38 and 12,838.45 is: 17,714.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,794.22 : 30,071.38 = 12,838.45 : x
  2. Step 2: Convert to fraction form
    21,794.22/30,071.38 = 12,838.45/x
  3. Step 3: Cross multiply
    21,794.22x = 30,071.38 × 12,838.45
  4. Step 4: Simplify right side
    21,794.22x = 386,069,908.56
  5. Step 5: Solve for x
    x = 386,069,908.56/21,794.22
  6. Step 6: Final answer
    x = 17,714.33

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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.