Home / 20,686.03-28,551.80-11,738.77

Finding the Fourth Proportional to 20,686.03, 28,551.80 and 11,738.77

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Solution

The fourth proportional to 20,686.03, 28,551.80 and 11,738.77 is: 16,202.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.03 : 28,551.80 = 11,738.77 : x
  2. Step 2: Convert to fraction form
    20,686.03/28,551.80 = 11,738.77/x
  3. Step 3: Cross multiply
    20,686.03x = 28,551.80 × 11,738.77
  4. Step 4: Simplify right side
    20,686.03x = 335,163,013.29
  5. Step 5: Solve for x
    x = 335,163,013.29/20,686.03
  6. Step 6: Final answer
    x = 16,202.38

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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.