Home / 20,519.04-28,310.90-12,558.36

Finding the Fourth Proportional to 20,519.04, 28,310.90 and 12,558.36

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Solution

The fourth proportional to 20,519.04, 28,310.90 and 12,558.36 is: 17,327.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,519.04 : 28,310.90 = 12,558.36 : x
  2. Step 2: Convert to fraction form
    20,519.04/28,310.90 = 12,558.36/x
  3. Step 3: Cross multiply
    20,519.04x = 28,310.90 × 12,558.36
  4. Step 4: Simplify right side
    20,519.04x = 355,538,474.12
  5. Step 5: Solve for x
    x = 355,538,474.12/20,519.04
  6. Step 6: Final answer
    x = 17,327.25

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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.