Home / 15,415.94-21,274.04-8,342.44

Finding the Fourth Proportional to 15,415.94, 21,274.04 and 8,342.44

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Solution

The fourth proportional to 15,415.94, 21,274.04 and 8,342.44 is: 11,512.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.94 : 21,274.04 = 8,342.44 : x
  2. Step 2: Convert to fraction form
    15,415.94/21,274.04 = 8,342.44/x
  3. Step 3: Cross multiply
    15,415.94x = 21,274.04 × 8,342.44
  4. Step 4: Simplify right side
    15,415.94x = 177,477,402.26
  5. Step 5: Solve for x
    x = 177,477,402.26/15,415.94
  6. Step 6: Final answer
    x = 11,512.59

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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.