Home / 20,878.23-28,811.94-11,446.77

Finding the Fourth Proportional to 20,878.23, 28,811.94 and 11,446.77

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Solution

The fourth proportional to 20,878.23, 28,811.94 and 11,446.77 is: 15,796.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,878.23 : 28,811.94 = 11,446.77 : x
  2. Step 2: Convert to fraction form
    20,878.23/28,811.94 = 11,446.77/x
  3. Step 3: Cross multiply
    20,878.23x = 28,811.94 × 11,446.77
  4. Step 4: Simplify right side
    20,878.23x = 329,803,650.43
  5. Step 5: Solve for x
    x = 329,803,650.43/20,878.23
  6. Step 6: Final answer
    x = 15,796.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.