Home / 20,435.32-30,624.44-9,902.55

Finding the Fourth Proportional to 20,435.32, 30,624.44 and 9,902.55

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Solution

The fourth proportional to 20,435.32, 30,624.44 and 9,902.55 is: 14,839.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.32 : 30,624.44 = 9,902.55 : x
  2. Step 2: Convert to fraction form
    20,435.32/30,624.44 = 9,902.55/x
  3. Step 3: Cross multiply
    20,435.32x = 30,624.44 × 9,902.55
  4. Step 4: Simplify right side
    20,435.32x = 303,259,975.27
  5. Step 5: Solve for x
    x = 303,259,975.27/20,435.32
  6. Step 6: Final answer
    x = 14,839.99

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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.