Home / 13,692.13-20,439.14-12,031.37

Finding the Fourth Proportional to 13,692.13, 20,439.14 and 12,031.37

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Solution

The fourth proportional to 13,692.13, 20,439.14 and 12,031.37 is: 17,960.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,692.13 : 20,439.14 = 12,031.37 : x
  2. Step 2: Convert to fraction form
    13,692.13/20,439.14 = 12,031.37/x
  3. Step 3: Cross multiply
    13,692.13x = 20,439.14 × 12,031.37
  4. Step 4: Simplify right side
    13,692.13x = 245,910,837.79
  5. Step 5: Solve for x
    x = 245,910,837.79/13,692.13
  6. Step 6: Final answer
    x = 17,960.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.