Home / 20,712.32-31,076.06-12,927.68

Finding the Fourth Proportional to 20,712.32, 31,076.06 and 12,927.68

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Solution

The fourth proportional to 20,712.32, 31,076.06 and 12,927.68 is: 19,396.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.32 : 31,076.06 = 12,927.68 : x
  2. Step 2: Convert to fraction form
    20,712.32/31,076.06 = 12,927.68/x
  3. Step 3: Cross multiply
    20,712.32x = 31,076.06 × 12,927.68
  4. Step 4: Simplify right side
    20,712.32x = 401,741,359.34
  5. Step 5: Solve for x
    x = 401,741,359.34/20,712.32
  6. Step 6: Final answer
    x = 19,396.25

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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.