Home / 20,515.98-28,308.92-11,563.32

Finding the Fourth Proportional to 20,515.98, 28,308.92 and 11,563.32

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Solution

The fourth proportional to 20,515.98, 28,308.92 and 11,563.32 is: 15,955.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.98 : 28,308.92 = 11,563.32 : x
  2. Step 2: Convert to fraction form
    20,515.98/28,308.92 = 11,563.32/x
  3. Step 3: Cross multiply
    20,515.98x = 28,308.92 × 11,563.32
  4. Step 4: Simplify right side
    20,515.98x = 327,345,043.00
  5. Step 5: Solve for x
    x = 327,345,043.00/20,515.98
  6. Step 6: Final answer
    x = 15,955.61

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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.