Home / 20,911.96-31,370.72-11,051.64

Finding the Fourth Proportional to 20,911.96, 31,370.72 and 11,051.64

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Solution

The fourth proportional to 20,911.96, 31,370.72 and 11,051.64 is: 16,578.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,911.96 : 31,370.72 = 11,051.64 : x
  2. Step 2: Convert to fraction form
    20,911.96/31,370.72 = 11,051.64/x
  3. Step 3: Cross multiply
    20,911.96x = 31,370.72 × 11,051.64
  4. Step 4: Simplify right side
    20,911.96x = 346,697,903.98
  5. Step 5: Solve for x
    x = 346,697,903.98/20,911.96
  6. Step 6: Final answer
    x = 16,578.93

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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.