Home / 13,660.70-18,851.72-7,692.39

Finding the Fourth Proportional to 13,660.70, 18,851.72 and 7,692.39

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Solution

The fourth proportional to 13,660.70, 18,851.72 and 7,692.39 is: 10,615.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,660.70 : 18,851.72 = 7,692.39 : x
  2. Step 2: Convert to fraction form
    13,660.70/18,851.72 = 7,692.39/x
  3. Step 3: Cross multiply
    13,660.70x = 18,851.72 × 7,692.39
  4. Step 4: Simplify right side
    13,660.70x = 145,014,743.95
  5. Step 5: Solve for x
    x = 145,014,743.95/13,660.70
  6. Step 6: Final answer
    x = 10,615.47

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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.