Home / 31,286.52-46,945.20-14,647.68

Finding the Fourth Proportional to 31,286.52, 46,945.20 and 14,647.68

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Solution

The fourth proportional to 31,286.52, 46,945.20 and 14,647.68 is: 21,978.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,286.52 : 46,945.20 = 14,647.68 : x
  2. Step 2: Convert to fraction form
    31,286.52/46,945.20 = 14,647.68/x
  3. Step 3: Cross multiply
    31,286.52x = 46,945.20 × 14,647.68
  4. Step 4: Simplify right side
    31,286.52x = 687,638,267.14
  5. Step 5: Solve for x
    x = 687,638,267.14/31,286.52
  6. Step 6: Final answer
    x = 21,978.74

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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.