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Finding the Fourth Proportional to 38,315.52, 52,874.64 and 21,548.64

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Solution

The fourth proportional to 38,315.52, 52,874.64 and 21,548.64 is: 29,736.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,315.52 : 52,874.64 = 21,548.64 : x
  2. Step 2: Convert to fraction form
    38,315.52/52,874.64 = 21,548.64/x
  3. Step 3: Cross multiply
    38,315.52x = 52,874.64 × 21,548.64
  4. Step 4: Simplify right side
    38,315.52x = 1,139,376,582.49
  5. Step 5: Solve for x
    x = 1,139,376,582.49/38,315.52
  6. Step 6: Final answer
    x = 29,736.69

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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.