Home / 15,199.35-20,964.85-13,206.48

Finding the Fourth Proportional to 15,199.35, 20,964.85 and 13,206.48

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Solution

The fourth proportional to 15,199.35, 20,964.85 and 13,206.48 is: 18,216.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,199.35 : 20,964.85 = 13,206.48 : x
  2. Step 2: Convert to fraction form
    15,199.35/20,964.85 = 13,206.48/x
  3. Step 3: Cross multiply
    15,199.35x = 20,964.85 × 13,206.48
  4. Step 4: Simplify right side
    15,199.35x = 276,871,872.23
  5. Step 5: Solve for x
    x = 276,871,872.23/15,199.35
  6. Step 6: Final answer
    x = 18,216.03

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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.