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Finding the Fourth Proportional to 38,472.15, 57,661.15 and 21,846.09

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Solution

The fourth proportional to 38,472.15, 57,661.15 and 21,846.09 is: 32,742.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,472.15 : 57,661.15 = 21,846.09 : x
  2. Step 2: Convert to fraction form
    38,472.15/57,661.15 = 21,846.09/x
  3. Step 3: Cross multiply
    38,472.15x = 57,661.15 × 21,846.09
  4. Step 4: Simplify right side
    38,472.15x = 1,259,670,672.40
  5. Step 5: Solve for x
    x = 1,259,670,672.40/38,472.15
  6. Step 6: Final answer
    x = 32,742.40

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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.