Home / 20,436.84-30,656.46-6,399.48

Finding the Fourth Proportional to 20,436.84, 30,656.46 and 6,399.48

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Solution

The fourth proportional to 20,436.84, 30,656.46 and 6,399.48 is: 9,599.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.84 : 30,656.46 = 6,399.48 : x
  2. Step 2: Convert to fraction form
    20,436.84/30,656.46 = 6,399.48/x
  3. Step 3: Cross multiply
    20,436.84x = 30,656.46 × 6,399.48
  4. Step 4: Simplify right side
    20,436.84x = 196,185,402.64
  5. Step 5: Solve for x
    x = 196,185,402.64/20,436.84
  6. Step 6: Final answer
    x = 9,599.60

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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.