Home / 20,796.70-31,146.45-20,379.10

Finding the Fourth Proportional to 20,796.70, 31,146.45 and 20,379.10

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Solution

The fourth proportional to 20,796.70, 31,146.45 and 20,379.10 is: 30,521.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.70 : 31,146.45 = 20,379.10 : x
  2. Step 2: Convert to fraction form
    20,796.70/31,146.45 = 20,379.10/x
  3. Step 3: Cross multiply
    20,796.70x = 31,146.45 × 20,379.10
  4. Step 4: Simplify right side
    20,796.70x = 634,736,619.20
  5. Step 5: Solve for x
    x = 634,736,619.20/20,796.70
  6. Step 6: Final answer
    x = 30,521.03

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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.