Home / 13,381.37-20,066.24-7,139.99

Finding the Fourth Proportional to 13,381.37, 20,066.24 and 7,139.99

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Solution

The fourth proportional to 13,381.37, 20,066.24 and 7,139.99 is: 10,706.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.37 : 20,066.24 = 7,139.99 : x
  2. Step 2: Convert to fraction form
    13,381.37/20,066.24 = 7,139.99/x
  3. Step 3: Cross multiply
    13,381.37x = 20,066.24 × 7,139.99
  4. Step 4: Simplify right side
    13,381.37x = 143,272,616.91
  5. Step 5: Solve for x
    x = 143,272,616.91/13,381.37
  6. Step 6: Final answer
    x = 10,706.88

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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.