Home / 30,915.75-46,379.89-13,146.38

Finding the Fourth Proportional to 30,915.75, 46,379.89 and 13,146.38

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Solution

The fourth proportional to 30,915.75, 46,379.89 and 13,146.38 is: 19,722.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,915.75 : 46,379.89 = 13,146.38 : x
  2. Step 2: Convert to fraction form
    30,915.75/46,379.89 = 13,146.38/x
  3. Step 3: Cross multiply
    30,915.75x = 46,379.89 × 13,146.38
  4. Step 4: Simplify right side
    30,915.75x = 609,727,486.31
  5. Step 5: Solve for x
    x = 609,727,486.31/30,915.75
  6. Step 6: Final answer
    x = 19,722.23

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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.