Home / 27,431.80-41,134.72-12,636.34

Finding the Fourth Proportional to 27,431.80, 41,134.72 and 12,636.34

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Solution

The fourth proportional to 27,431.80, 41,134.72 and 12,636.34 is: 18,948.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,431.80 : 41,134.72 = 12,636.34 : x
  2. Step 2: Convert to fraction form
    27,431.80/41,134.72 = 12,636.34/x
  3. Step 3: Cross multiply
    27,431.80x = 41,134.72 × 12,636.34
  4. Step 4: Simplify right side
    27,431.80x = 519,792,307.72
  5. Step 5: Solve for x
    x = 519,792,307.72/27,431.80
  6. Step 6: Final answer
    x = 18,948.53

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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.