Home / 20,937.88-28,906.23-13,873.87

Finding the Fourth Proportional to 20,937.88, 28,906.23 and 13,873.87

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Solution

The fourth proportional to 20,937.88, 28,906.23 and 13,873.87 is: 19,153.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.88 : 28,906.23 = 13,873.87 : x
  2. Step 2: Convert to fraction form
    20,937.88/28,906.23 = 13,873.87/x
  3. Step 3: Cross multiply
    20,937.88x = 28,906.23 × 13,873.87
  4. Step 4: Simplify right side
    20,937.88x = 401,041,277.21
  5. Step 5: Solve for x
    x = 401,041,277.21/20,937.88
  6. Step 6: Final answer
    x = 19,153.86

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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.