Home / 15,415.90-21,274.00-8,342.32

Finding the Fourth Proportional to 15,415.90, 21,274.00 and 8,342.32

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Solution

The fourth proportional to 15,415.90, 21,274.00 and 8,342.32 is: 11,512.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.90 : 21,274.00 = 8,342.32 : x
  2. Step 2: Convert to fraction form
    15,415.90/21,274.00 = 8,342.32/x
  3. Step 3: Cross multiply
    15,415.90x = 21,274.00 × 8,342.32
  4. Step 4: Simplify right side
    15,415.90x = 177,474,473.97
  5. Step 5: Solve for x
    x = 177,474,473.97/15,415.90
  6. Step 6: Final answer
    x = 11,512.43

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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.