Home / 13,559.83-20,341.58-12,739.70

Finding the Fourth Proportional to 13,559.83, 20,341.58 and 12,739.70

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Solution

The fourth proportional to 13,559.83, 20,341.58 and 12,739.70 is: 19,111.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,559.83 : 20,341.58 = 12,739.70 : x
  2. Step 2: Convert to fraction form
    13,559.83/20,341.58 = 12,739.70/x
  3. Step 3: Cross multiply
    13,559.83x = 20,341.58 × 12,739.70
  4. Step 4: Simplify right side
    13,559.83x = 259,145,613.88
  5. Step 5: Solve for x
    x = 259,145,613.88/13,559.83
  6. Step 6: Final answer
    x = 19,111.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.