Home / 31,739.03-43,801.29-18,128.26

Finding the Fourth Proportional to 31,739.03, 43,801.29 and 18,128.26

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Solution

The fourth proportional to 31,739.03, 43,801.29 and 18,128.26 is: 25,017.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,739.03 : 43,801.29 = 18,128.26 : x
  2. Step 2: Convert to fraction form
    31,739.03/43,801.29 = 18,128.26/x
  3. Step 3: Cross multiply
    31,739.03x = 43,801.29 × 18,128.26
  4. Step 4: Simplify right side
    31,739.03x = 794,041,173.46
  5. Step 5: Solve for x
    x = 794,041,173.46/31,739.03
  6. Step 6: Final answer
    x = 25,017.81

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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.