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Finding the Fourth Proportional to 38,883.78, 58,315.95 and 11,181.78

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Solution

The fourth proportional to 38,883.78, 58,315.95 and 11,181.78 is: 16,769.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,883.78 : 58,315.95 = 11,181.78 : x
  2. Step 2: Convert to fraction form
    38,883.78/58,315.95 = 11,181.78/x
  3. Step 3: Cross multiply
    38,883.78x = 58,315.95 × 11,181.78
  4. Step 4: Simplify right side
    38,883.78x = 652,076,123.39
  5. Step 5: Solve for x
    x = 652,076,123.39/38,883.78
  6. Step 6: Final answer
    x = 16,769.87

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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.