Home / 20,698.64-31,040.11-8,851.91

Finding the Fourth Proportional to 20,698.64, 31,040.11 and 8,851.91

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Solution

The fourth proportional to 20,698.64, 31,040.11 and 8,851.91 is: 13,274.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.64 : 31,040.11 = 8,851.91 : x
  2. Step 2: Convert to fraction form
    20,698.64/31,040.11 = 8,851.91/x
  3. Step 3: Cross multiply
    20,698.64x = 31,040.11 × 8,851.91
  4. Step 4: Simplify right side
    20,698.64x = 274,764,260.11
  5. Step 5: Solve for x
    x = 274,764,260.11/20,698.64
  6. Step 6: Final answer
    x = 13,274.51

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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.