Home / 12,680.58-19,021.08-3,915.51

Finding the Fourth Proportional to 12,680.58, 19,021.08 and 3,915.51

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Solution

The fourth proportional to 12,680.58, 19,021.08 and 3,915.51 is: 5,873.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680.58 : 19,021.08 = 3,915.51 : x
  2. Step 2: Convert to fraction form
    12,680.58/19,021.08 = 3,915.51/x
  3. Step 3: Cross multiply
    12,680.58x = 19,021.08 × 3,915.51
  4. Step 4: Simplify right side
    12,680.58x = 74,477,228.95
  5. Step 5: Solve for x
    x = 74,477,228.95/12,680.58
  6. Step 6: Final answer
    x = 5,873.33

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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.