Home / 18,692.55-25,784.33-11,133.81

Finding the Fourth Proportional to 18,692.55, 25,784.33 and 11,133.81

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Solution

The fourth proportional to 18,692.55, 25,784.33 and 11,133.81 is: 15,357.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,692.55 : 25,784.33 = 11,133.81 : x
  2. Step 2: Convert to fraction form
    18,692.55/25,784.33 = 11,133.81/x
  3. Step 3: Cross multiply
    18,692.55x = 25,784.33 × 11,133.81
  4. Step 4: Simplify right side
    18,692.55x = 287,077,775.53
  5. Step 5: Solve for x
    x = 287,077,775.53/18,692.55
  6. Step 6: Final answer
    x = 15,357.87

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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.