Home / 20,314.09-28,031.70-11,814.54

Finding the Fourth Proportional to 20,314.09, 28,031.70 and 11,814.54

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Solution

The fourth proportional to 20,314.09, 28,031.70 and 11,814.54 is: 16,303.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,314.09 : 28,031.70 = 11,814.54 : x
  2. Step 2: Convert to fraction form
    20,314.09/28,031.70 = 11,814.54/x
  3. Step 3: Cross multiply
    20,314.09x = 28,031.70 × 11,814.54
  4. Step 4: Simplify right side
    20,314.09x = 331,181,640.92
  5. Step 5: Solve for x
    x = 331,181,640.92/20,314.09
  6. Step 6: Final answer
    x = 16,303.05

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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.