Home / 15,011.79-20,692.41-11,820.03

Finding the Fourth Proportional to 15,011.79, 20,692.41 and 11,820.03

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Solution

The fourth proportional to 15,011.79, 20,692.41 and 11,820.03 is: 16,292.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,011.79 : 20,692.41 = 11,820.03 : x
  2. Step 2: Convert to fraction form
    15,011.79/20,692.41 = 11,820.03/x
  3. Step 3: Cross multiply
    15,011.79x = 20,692.41 × 11,820.03
  4. Step 4: Simplify right side
    15,011.79x = 244,584,851.54
  5. Step 5: Solve for x
    x = 244,584,851.54/15,011.79
  6. Step 6: Final answer
    x = 16,292.85

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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.