Home / 15,878.27-21,912.46-8,708.52

Finding the Fourth Proportional to 15,878.27, 21,912.46 and 8,708.52

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Solution

The fourth proportional to 15,878.27, 21,912.46 and 8,708.52 is: 12,018.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,878.27 : 21,912.46 = 8,708.52 : x
  2. Step 2: Convert to fraction form
    15,878.27/21,912.46 = 8,708.52/x
  3. Step 3: Cross multiply
    15,878.27x = 21,912.46 × 8,708.52
  4. Step 4: Simplify right side
    15,878.27x = 190,825,052.62
  5. Step 5: Solve for x
    x = 190,825,052.62/15,878.27
  6. Step 6: Final answer
    x = 12,018.00

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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.