Home / 31,662.34-43,675.00-20,907.32

Finding the Fourth Proportional to 31,662.34, 43,675.00 and 20,907.32

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Solution

The fourth proportional to 31,662.34, 43,675.00 and 20,907.32 is: 28,839.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,662.34 : 43,675.00 = 20,907.32 : x
  2. Step 2: Convert to fraction form
    31,662.34/43,675.00 = 20,907.32/x
  3. Step 3: Cross multiply
    31,662.34x = 43,675.00 × 20,907.32
  4. Step 4: Simplify right side
    31,662.34x = 913,126,930.36
  5. Step 5: Solve for x
    x = 913,126,930.36/31,662.34
  6. Step 6: Final answer
    x = 28,839.52

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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.