Home / 31,738.80-47,629.80-18,577.20

Finding the Fourth Proportional to 31,738.80, 47,629.80 and 18,577.20

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Solution

The fourth proportional to 31,738.80, 47,629.80 and 18,577.20 is: 27,878.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,738.80 : 47,629.80 = 18,577.20 : x
  2. Step 2: Convert to fraction form
    31,738.80/47,629.80 = 18,577.20/x
  3. Step 3: Cross multiply
    31,738.80x = 47,629.80 × 18,577.20
  4. Step 4: Simplify right side
    31,738.80x = 884,828,320.56
  5. Step 5: Solve for x
    x = 884,828,320.56/31,738.80
  6. Step 6: Final answer
    x = 27,878.44

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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.