Home / 15,415.55-21,274.42-8,698.73

Finding the Fourth Proportional to 15,415.55, 21,274.42 and 8,698.73

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Solution

The fourth proportional to 15,415.55, 21,274.42 and 8,698.73 is: 12,004.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.55 : 21,274.42 = 8,698.73 : x
  2. Step 2: Convert to fraction form
    15,415.55/21,274.42 = 8,698.73/x
  3. Step 3: Cross multiply
    15,415.55x = 21,274.42 × 8,698.73
  4. Step 4: Simplify right side
    15,415.55x = 185,060,435.49
  5. Step 5: Solve for x
    x = 185,060,435.49/15,415.55
  6. Step 6: Final answer
    x = 12,004.79

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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.