Home / 20,314.66-28,040.19-11,818.78

Finding the Fourth Proportional to 20,314.66, 28,040.19 and 11,818.78

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Solution

The fourth proportional to 20,314.66, 28,040.19 and 11,818.78 is: 16,313.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,314.66 : 28,040.19 = 11,818.78 : x
  2. Step 2: Convert to fraction form
    20,314.66/28,040.19 = 11,818.78/x
  3. Step 3: Cross multiply
    20,314.66x = 28,040.19 × 11,818.78
  4. Step 4: Simplify right side
    20,314.66x = 331,400,836.77
  5. Step 5: Solve for x
    x = 331,400,836.77/20,314.66
  6. Step 6: Final answer
    x = 16,313.38

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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.