Home / 20,745.52-31,122.90-5,953.28

Finding the Fourth Proportional to 20,745.52, 31,122.90 and 5,953.28

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Solution

The fourth proportional to 20,745.52, 31,122.90 and 5,953.28 is: 8,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.52 : 31,122.90 = 5,953.28 : x
  2. Step 2: Convert to fraction form
    20,745.52/31,122.90 = 5,953.28/x
  3. Step 3: Cross multiply
    20,745.52x = 31,122.90 × 5,953.28
  4. Step 4: Simplify right side
    20,745.52x = 185,283,473.00
  5. Step 5: Solve for x
    x = 185,283,473.00/20,745.52
  6. Step 6: Final answer
    x = 8,931.25

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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.