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Finding the Fourth Proportional to 31,745.52, 43,803.79 and 19,013.54

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Solution

The fourth proportional to 31,745.52, 43,803.79 and 19,013.54 is: 26,235.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,745.52 : 43,803.79 = 19,013.54 : x
  2. Step 2: Convert to fraction form
    31,745.52/43,803.79 = 19,013.54/x
  3. Step 3: Cross multiply
    31,745.52x = 43,803.79 × 19,013.54
  4. Step 4: Simplify right side
    31,745.52x = 832,864,846.76
  5. Step 5: Solve for x
    x = 832,864,846.76/31,745.52
  6. Step 6: Final answer
    x = 26,235.67

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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.