Home / 13,661.34-18,851.79-7,692.66

Finding the Fourth Proportional to 13,661.34, 18,851.79 and 7,692.66

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Solution

The fourth proportional to 13,661.34, 18,851.79 and 7,692.66 is: 10,615.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.34 : 18,851.79 = 7,692.66 : x
  2. Step 2: Convert to fraction form
    13,661.34/18,851.79 = 7,692.66/x
  3. Step 3: Cross multiply
    13,661.34x = 18,851.79 × 7,692.66
  4. Step 4: Simplify right side
    13,661.34x = 145,020,410.86
  5. Step 5: Solve for x
    x = 145,020,410.86/13,661.34
  6. Step 6: Final answer
    x = 10,615.39

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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.