Home / 12,461.40-18,692.10-12,331.80

Finding the Fourth Proportional to 12,461.40, 18,692.10 and 12,331.80

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Solution

The fourth proportional to 12,461.40, 18,692.10 and 12,331.80 is: 18,497.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,461.40 : 18,692.10 = 12,331.80 : x
  2. Step 2: Convert to fraction form
    12,461.40/18,692.10 = 12,331.80/x
  3. Step 3: Cross multiply
    12,461.40x = 18,692.10 × 12,331.80
  4. Step 4: Simplify right side
    12,461.40x = 230,507,238.78
  5. Step 5: Solve for x
    x = 230,507,238.78/12,461.40
  6. Step 6: Final answer
    x = 18,497.70

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.