Home / 31,739.79-43,799.40-18,315.36

Finding the Fourth Proportional to 31,739.79, 43,799.40 and 18,315.36

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Solution

The fourth proportional to 31,739.79, 43,799.40 and 18,315.36 is: 25,274.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,739.79 : 43,799.40 = 18,315.36 : x
  2. Step 2: Convert to fraction form
    31,739.79/43,799.40 = 18,315.36/x
  3. Step 3: Cross multiply
    31,739.79x = 43,799.40 × 18,315.36
  4. Step 4: Simplify right side
    31,739.79x = 802,201,778.78
  5. Step 5: Solve for x
    x = 802,201,778.78/31,739.79
  6. Step 6: Final answer
    x = 25,274.33

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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.