Home / 13,271.22-18,308.13-7,956.81

Finding the Fourth Proportional to 13,271.22, 18,308.13 and 7,956.81

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Solution

The fourth proportional to 13,271.22, 18,308.13 and 7,956.81 is: 10,976.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,271.22 : 18,308.13 = 7,956.81 : x
  2. Step 2: Convert to fraction form
    13,271.22/18,308.13 = 7,956.81/x
  3. Step 3: Cross multiply
    13,271.22x = 18,308.13 × 7,956.81
  4. Step 4: Simplify right side
    13,271.22x = 145,674,311.87
  5. Step 5: Solve for x
    x = 145,674,311.87/13,271.22
  6. Step 6: Final answer
    x = 10,976.71

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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.