Home / 20,733-28,611.55-11,780.51

Finding the Fourth Proportional to 20,733, 28,611.55 and 11,780.51

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Solution

The fourth proportional to 20,733, 28,611.55 and 11,780.51 is: 16,257.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,733 : 28,611.55 = 11,780.51 : x
  2. Step 2: Convert to fraction form
    20,733/28,611.55 = 11,780.51/x
  3. Step 3: Cross multiply
    20,733x = 28,611.55 × 11,780.51
  4. Step 4: Simplify right side
    20,733x = 337,058,692.97
  5. Step 5: Solve for x
    x = 337,058,692.97/20,733
  6. Step 6: Final answer
    x = 16,257.11

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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.