Home / 20,962.31-28,932.09-12,015.80

Finding the Fourth Proportional to 20,962.31, 28,932.09 and 12,015.80

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Solution

The fourth proportional to 20,962.31, 28,932.09 and 12,015.80 is: 16,584.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.31 : 28,932.09 = 12,015.80 : x
  2. Step 2: Convert to fraction form
    20,962.31/28,932.09 = 12,015.80/x
  3. Step 3: Cross multiply
    20,962.31x = 28,932.09 × 12,015.80
  4. Step 4: Simplify right side
    20,962.31x = 347,642,207.02
  5. Step 5: Solve for x
    x = 347,642,207.02/20,962.31
  6. Step 6: Final answer
    x = 16,584.16

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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.