Home / 13,126.68-18,100.11-10,729.20

Finding the Fourth Proportional to 13,126.68, 18,100.11 and 10,729.20

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Solution

The fourth proportional to 13,126.68, 18,100.11 and 10,729.20 is: 14,794.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,126.68 : 18,100.11 = 10,729.20 : x
  2. Step 2: Convert to fraction form
    13,126.68/18,100.11 = 10,729.20/x
  3. Step 3: Cross multiply
    13,126.68x = 18,100.11 × 10,729.20
  4. Step 4: Simplify right side
    13,126.68x = 194,199,700.21
  5. Step 5: Solve for x
    x = 194,199,700.21/13,126.68
  6. Step 6: Final answer
    x = 14,794.27

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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.