Home / 13,661.10-18,851.13-7,692.21

Finding the Fourth Proportional to 13,661.10, 18,851.13 and 7,692.21

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Solution

The fourth proportional to 13,661.10, 18,851.13 and 7,692.21 is: 10,614.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.10 : 18,851.13 = 7,692.21 : x
  2. Step 2: Convert to fraction form
    13,661.10/18,851.13 = 7,692.21/x
  3. Step 3: Cross multiply
    13,661.10x = 18,851.13 × 7,692.21
  4. Step 4: Simplify right side
    13,661.10x = 145,006,850.70
  5. Step 5: Solve for x
    x = 145,006,850.70/13,661.10
  6. Step 6: Final answer
    x = 10,614.58

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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.