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Finding the Fourth Proportional to 39,674.64, 54,749.88 and 21,524.56

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Solution

The fourth proportional to 39,674.64, 54,749.88 and 21,524.56 is: 29,703.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,674.64 : 54,749.88 = 21,524.56 : x
  2. Step 2: Convert to fraction form
    39,674.64/54,749.88 = 21,524.56/x
  3. Step 3: Cross multiply
    39,674.64x = 54,749.88 × 21,524.56
  4. Step 4: Simplify right side
    39,674.64x = 1,178,467,077.05
  5. Step 5: Solve for x
    x = 1,178,467,077.05/39,674.64
  6. Step 6: Final answer
    x = 29,703.28

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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.