Home / 20,438.84-28,195.01-13,726.37

Finding the Fourth Proportional to 20,438.84, 28,195.01 and 13,726.37

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Solution

The fourth proportional to 20,438.84, 28,195.01 and 13,726.37 is: 18,935.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,438.84 : 28,195.01 = 13,726.37 : x
  2. Step 2: Convert to fraction form
    20,438.84/28,195.01 = 13,726.37/x
  3. Step 3: Cross multiply
    20,438.84x = 28,195.01 × 13,726.37
  4. Step 4: Simplify right side
    20,438.84x = 387,015,139.41
  5. Step 5: Solve for x
    x = 387,015,139.41/20,438.84
  6. Step 6: Final answer
    x = 18,935.28

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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.