Home / 31,662.72-43,675.52-20,907.69

Finding the Fourth Proportional to 31,662.72, 43,675.52 and 20,907.69

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Solution

The fourth proportional to 31,662.72, 43,675.52 and 20,907.69 is: 28,840.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,662.72 : 43,675.52 = 20,907.69 : x
  2. Step 2: Convert to fraction form
    31,662.72/43,675.52 = 20,907.69/x
  3. Step 3: Cross multiply
    31,662.72x = 43,675.52 × 20,907.69
  4. Step 4: Simplify right side
    31,662.72x = 913,154,128.21
  5. Step 5: Solve for x
    x = 913,154,128.21/31,662.72
  6. Step 6: Final answer
    x = 28,840.04

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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.