Home / 38,156.81-57,244.93-11,861.78

Finding the Fourth Proportional to 38,156.81, 57,244.93 and 11,861.78

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Solution

The fourth proportional to 38,156.81, 57,244.93 and 11,861.78 is: 17,795.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,156.81 : 57,244.93 = 11,861.78 : x
  2. Step 2: Convert to fraction form
    38,156.81/57,244.93 = 11,861.78/x
  3. Step 3: Cross multiply
    38,156.81x = 57,244.93 × 11,861.78
  4. Step 4: Simplify right side
    38,156.81x = 679,026,449.90
  5. Step 5: Solve for x
    x = 679,026,449.90/38,156.81
  6. Step 6: Final answer
    x = 17,795.68

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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.