Home / 31,728.51-43,773.75-18,982.06

Finding the Fourth Proportional to 31,728.51, 43,773.75 and 18,982.06

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Solution

The fourth proportional to 31,728.51, 43,773.75 and 18,982.06 is: 26,188.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,728.51 : 43,773.75 = 18,982.06 : x
  2. Step 2: Convert to fraction form
    31,728.51/43,773.75 = 18,982.06/x
  3. Step 3: Cross multiply
    31,728.51x = 43,773.75 × 18,982.06
  4. Step 4: Simplify right side
    31,728.51x = 830,915,948.93
  5. Step 5: Solve for x
    x = 830,915,948.93/31,728.51
  6. Step 6: Final answer
    x = 26,188.31

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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.