Home / 30,847.72-42,567.28-18,099.60

Finding the Fourth Proportional to 30,847.72, 42,567.28 and 18,099.60

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Solution

The fourth proportional to 30,847.72, 42,567.28 and 18,099.60 is: 24,975.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,847.72 : 42,567.28 = 18,099.60 : x
  2. Step 2: Convert to fraction form
    30,847.72/42,567.28 = 18,099.60/x
  3. Step 3: Cross multiply
    30,847.72x = 42,567.28 × 18,099.60
  4. Step 4: Simplify right side
    30,847.72x = 770,450,741.09
  5. Step 5: Solve for x
    x = 770,450,741.09/30,847.72
  6. Step 6: Final answer
    x = 24,975.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.