Home / 31,836.74-43,929.81-18,405.41

Finding the Fourth Proportional to 31,836.74, 43,929.81 and 18,405.41

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Solution

The fourth proportional to 31,836.74, 43,929.81 and 18,405.41 is: 25,396.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,836.74 : 43,929.81 = 18,405.41 : x
  2. Step 2: Convert to fraction form
    31,836.74/43,929.81 = 18,405.41/x
  3. Step 3: Cross multiply
    31,836.74x = 43,929.81 × 18,405.41
  4. Step 4: Simplify right side
    31,836.74x = 808,545,944.62
  5. Step 5: Solve for x
    x = 808,545,944.62/31,836.74
  6. Step 6: Final answer
    x = 25,396.64

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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.