Home / 20,583.30-30,873.74-12,687.32

Finding the Fourth Proportional to 20,583.30, 30,873.74 and 12,687.32

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Solution

The fourth proportional to 20,583.30, 30,873.74 and 12,687.32 is: 19,030.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.30 : 30,873.74 = 12,687.32 : x
  2. Step 2: Convert to fraction form
    20,583.30/30,873.74 = 12,687.32/x
  3. Step 3: Cross multiply
    20,583.30x = 30,873.74 × 12,687.32
  4. Step 4: Simplify right side
    20,583.30x = 391,705,032.72
  5. Step 5: Solve for x
    x = 391,705,032.72/20,583.30
  6. Step 6: Final answer
    x = 19,030.23

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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.