Home / 31,986.38-44,138.46-20,656.35

Finding the Fourth Proportional to 31,986.38, 44,138.46 and 20,656.35

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Solution

The fourth proportional to 31,986.38, 44,138.46 and 20,656.35 is: 28,504.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,986.38 : 44,138.46 = 20,656.35 : x
  2. Step 2: Convert to fraction form
    31,986.38/44,138.46 = 20,656.35/x
  3. Step 3: Cross multiply
    31,986.38x = 44,138.46 × 20,656.35
  4. Step 4: Simplify right side
    31,986.38x = 911,739,478.22
  5. Step 5: Solve for x
    x = 911,739,478.22/31,986.38
  6. Step 6: Final answer
    x = 28,504.00

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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.