Home / 20,295.41-30,443.12-13,319.55

Finding the Fourth Proportional to 20,295.41, 30,443.12 and 13,319.55

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Solution

The fourth proportional to 20,295.41, 30,443.12 and 13,319.55 is: 19,979.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,295.41 : 30,443.12 = 13,319.55 : x
  2. Step 2: Convert to fraction form
    20,295.41/30,443.12 = 13,319.55/x
  3. Step 3: Cross multiply
    20,295.41x = 30,443.12 × 13,319.55
  4. Step 4: Simplify right side
    20,295.41x = 405,488,592.40
  5. Step 5: Solve for x
    x = 405,488,592.40/20,295.41
  6. Step 6: Final answer
    x = 19,979.33

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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.