Home / 15,286.83-21,096.71-8,571.93

Finding the Fourth Proportional to 15,286.83, 21,096.71 and 8,571.93

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Solution

The fourth proportional to 15,286.83, 21,096.71 and 8,571.93 is: 11,829.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286.83 : 21,096.71 = 8,571.93 : x
  2. Step 2: Convert to fraction form
    15,286.83/21,096.71 = 8,571.93/x
  3. Step 3: Cross multiply
    15,286.83x = 21,096.71 × 8,571.93
  4. Step 4: Simplify right side
    15,286.83x = 180,839,478.49
  5. Step 5: Solve for x
    x = 180,839,478.49/15,286.83
  6. Step 6: Final answer
    x = 11,829.76

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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.