Home / 19,915.04-27,479.60-11,415.54

Finding the Fourth Proportional to 19,915.04, 27,479.60 and 11,415.54

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Solution

The fourth proportional to 19,915.04, 27,479.60 and 11,415.54 is: 15,751.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.04 : 27,479.60 = 11,415.54 : x
  2. Step 2: Convert to fraction form
    19,915.04/27,479.60 = 11,415.54/x
  3. Step 3: Cross multiply
    19,915.04x = 27,479.60 × 11,415.54
  4. Step 4: Simplify right side
    19,915.04x = 313,694,415.91
  5. Step 5: Solve for x
    x = 313,694,415.91/19,915.04
  6. Step 6: Final answer
    x = 15,751.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.