Home / 27,692.85-38,202.81-18,128.52

Finding the Fourth Proportional to 27,692.85, 38,202.81 and 18,128.52

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Solution

The fourth proportional to 27,692.85, 38,202.81 and 18,128.52 is: 25,008.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,692.85 : 38,202.81 = 18,128.52 : x
  2. Step 2: Convert to fraction form
    27,692.85/38,202.81 = 18,128.52/x
  3. Step 3: Cross multiply
    27,692.85x = 38,202.81 × 18,128.52
  4. Step 4: Simplify right side
    27,692.85x = 692,560,405.14
  5. Step 5: Solve for x
    x = 692,560,405.14/27,692.85
  6. Step 6: Final answer
    x = 25,008.64

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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.