Home / 31,849.63-43,940.23-20,518.25

Finding the Fourth Proportional to 31,849.63, 43,940.23 and 20,518.25

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Solution

The fourth proportional to 31,849.63, 43,940.23 and 20,518.25 is: 28,307.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,849.63 : 43,940.23 = 20,518.25 : x
  2. Step 2: Convert to fraction form
    31,849.63/43,940.23 = 20,518.25/x
  3. Step 3: Cross multiply
    31,849.63x = 43,940.23 × 20,518.25
  4. Step 4: Simplify right side
    31,849.63x = 901,576,353.20
  5. Step 5: Solve for x
    x = 901,576,353.20/31,849.63
  6. Step 6: Final answer
    x = 28,307.28

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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.