Home / 20,406.94-30,598.51-7,912.36

Finding the Fourth Proportional to 20,406.94, 30,598.51 and 7,912.36

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Solution

The fourth proportional to 20,406.94, 30,598.51 and 7,912.36 is: 11,863.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406.94 : 30,598.51 = 7,912.36 : x
  2. Step 2: Convert to fraction form
    20,406.94/30,598.51 = 7,912.36/x
  3. Step 3: Cross multiply
    20,406.94x = 30,598.51 × 7,912.36
  4. Step 4: Simplify right side
    20,406.94x = 242,106,564.95
  5. Step 5: Solve for x
    x = 242,106,564.95/20,406.94
  6. Step 6: Final answer
    x = 11,863.93

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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.