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Finding the Fourth Proportional to 38,647, 53,333.94 and 21,881.08

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Solution

The fourth proportional to 38,647, 53,333.94 and 21,881.08 is: 30,196.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,647 : 53,333.94 = 21,881.08 : x
  2. Step 2: Convert to fraction form
    38,647/53,333.94 = 21,881.08/x
  3. Step 3: Cross multiply
    38,647x = 53,333.94 × 21,881.08
  4. Step 4: Simplify right side
    38,647x = 1,167,004,207.86
  5. Step 5: Solve for x
    x = 1,167,004,207.86/38,647
  6. Step 6: Final answer
    x = 30,196.50

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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.