Home / 20,950.45-31,421.26-6,155.35

Finding the Fourth Proportional to 20,950.45, 31,421.26 and 6,155.35

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Solution

The fourth proportional to 20,950.45, 31,421.26 and 6,155.35 is: 9,231.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.45 : 31,421.26 = 6,155.35 : x
  2. Step 2: Convert to fraction form
    20,950.45/31,421.26 = 6,155.35/x
  3. Step 3: Cross multiply
    20,950.45x = 31,421.26 × 6,155.35
  4. Step 4: Simplify right side
    20,950.45x = 193,408,852.74
  5. Step 5: Solve for x
    x = 193,408,852.74/20,950.45
  6. Step 6: Final answer
    x = 9,231.73

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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.