Home / 12,342.42-18,515.79-4,551.30

Finding the Fourth Proportional to 12,342.42, 18,515.79 and 4,551.30

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Solution

The fourth proportional to 12,342.42, 18,515.79 and 4,551.30 is: 6,827.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,342.42 : 18,515.79 = 4,551.30 : x
  2. Step 2: Convert to fraction form
    12,342.42/18,515.79 = 4,551.30/x
  3. Step 3: Cross multiply
    12,342.42x = 18,515.79 × 4,551.30
  4. Step 4: Simplify right side
    12,342.42x = 84,270,915.03
  5. Step 5: Solve for x
    x = 84,270,915.03/12,342.42
  6. Step 6: Final answer
    x = 6,827.75

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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.