Home / 20,131.58-30,207.75-9,045.98

Finding the Fourth Proportional to 20,131.58, 30,207.75 and 9,045.98

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Solution

The fourth proportional to 20,131.58, 30,207.75 and 9,045.98 is: 13,573.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.58 : 30,207.75 = 9,045.98 : x
  2. Step 2: Convert to fraction form
    20,131.58/30,207.75 = 9,045.98/x
  3. Step 3: Cross multiply
    20,131.58x = 30,207.75 × 9,045.98
  4. Step 4: Simplify right side
    20,131.58x = 273,258,702.35
  5. Step 5: Solve for x
    x = 273,258,702.35/20,131.58
  6. Step 6: Final answer
    x = 13,573.63

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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.