Home / 31,289.54-43,185.09-18,714.26

Finding the Fourth Proportional to 31,289.54, 43,185.09 and 18,714.26

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Solution

The fourth proportional to 31,289.54, 43,185.09 and 18,714.26 is: 25,828.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,289.54 : 43,185.09 = 18,714.26 : x
  2. Step 2: Convert to fraction form
    31,289.54/43,185.09 = 18,714.26/x
  3. Step 3: Cross multiply
    31,289.54x = 43,185.09 × 18,714.26
  4. Step 4: Simplify right side
    31,289.54x = 808,177,002.38
  5. Step 5: Solve for x
    x = 808,177,002.38/31,289.54
  6. Step 6: Final answer
    x = 25,828.98

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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.