Home / 31,889.44-47,790.40-20,181.72

Finding the Fourth Proportional to 31,889.44, 47,790.40 and 20,181.72

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Solution

The fourth proportional to 31,889.44, 47,790.40 and 20,181.72 is: 30,244.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,889.44 : 47,790.40 = 20,181.72 : x
  2. Step 2: Convert to fraction form
    31,889.44/47,790.40 = 20,181.72/x
  3. Step 3: Cross multiply
    31,889.44x = 47,790.40 × 20,181.72
  4. Step 4: Simplify right side
    31,889.44x = 964,492,471.49
  5. Step 5: Solve for x
    x = 964,492,471.49/31,889.44
  6. Step 6: Final answer
    x = 30,244.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.