Home / 11,915.19-17,870.75-3,150.99

Finding the Fourth Proportional to 11,915.19, 17,870.75 and 3,150.99

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Solution

The fourth proportional to 11,915.19, 17,870.75 and 3,150.99 is: 4,725.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.19 : 17,870.75 = 3,150.99 : x
  2. Step 2: Convert to fraction form
    11,915.19/17,870.75 = 3,150.99/x
  3. Step 3: Cross multiply
    11,915.19x = 17,870.75 × 3,150.99
  4. Step 4: Simplify right side
    11,915.19x = 56,310,538.79
  5. Step 5: Solve for x
    x = 56,310,538.79/11,915.19
  6. Step 6: Final answer
    x = 4,725.95

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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.