Home / 38,431.47-57,645.13-11,777.54

Finding the Fourth Proportional to 38,431.47, 57,645.13 and 11,777.54

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Solution

The fourth proportional to 38,431.47, 57,645.13 and 11,777.54 is: 17,665.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,431.47 : 57,645.13 = 11,777.54 : x
  2. Step 2: Convert to fraction form
    38,431.47/57,645.13 = 11,777.54/x
  3. Step 3: Cross multiply
    38,431.47x = 57,645.13 × 11,777.54
  4. Step 4: Simplify right side
    38,431.47x = 678,917,824.38
  5. Step 5: Solve for x
    x = 678,917,824.38/38,431.47
  6. Step 6: Final answer
    x = 17,665.67

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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.