Home / 39,270.42-58,915.35-12,975.39

Finding the Fourth Proportional to 39,270.42, 58,915.35 and 12,975.39

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Solution

The fourth proportional to 39,270.42, 58,915.35 and 12,975.39 is: 19,466.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,270.42 : 58,915.35 = 12,975.39 : x
  2. Step 2: Convert to fraction form
    39,270.42/58,915.35 = 12,975.39/x
  3. Step 3: Cross multiply
    39,270.42x = 58,915.35 × 12,975.39
  4. Step 4: Simplify right side
    39,270.42x = 764,449,643.24
  5. Step 5: Solve for x
    x = 764,449,643.24/39,270.42
  6. Step 6: Final answer
    x = 19,466.30

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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.