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Finding the Fourth Proportional to 20,250.63, 30,391.47 and 13,228.74

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Solution

The fourth proportional to 20,250.63, 30,391.47 and 13,228.74 is: 19,853.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,250.63 : 30,391.47 = 13,228.74 : x
  2. Step 2: Convert to fraction form
    20,250.63/30,391.47 = 13,228.74/x
  3. Step 3: Cross multiply
    20,250.63x = 30,391.47 × 13,228.74
  4. Step 4: Simplify right side
    20,250.63x = 402,040,854.85
  5. Step 5: Solve for x
    x = 402,040,854.85/20,250.63
  6. Step 6: Final answer
    x = 19,853.25

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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.