Home / 31,201.80-46,751.40-18,031.20

Finding the Fourth Proportional to 31,201.80, 46,751.40 and 18,031.20

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Solution

The fourth proportional to 31,201.80, 46,751.40 and 18,031.20 is: 27,017.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,201.80 : 46,751.40 = 18,031.20 : x
  2. Step 2: Convert to fraction form
    31,201.80/46,751.40 = 18,031.20/x
  3. Step 3: Cross multiply
    31,201.80x = 46,751.40 × 18,031.20
  4. Step 4: Simplify right side
    31,201.80x = 842,983,843.68
  5. Step 5: Solve for x
    x = 842,983,843.68/31,201.80
  6. Step 6: Final answer
    x = 27,017.15

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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.