Home / 13,311.81-18,370.13-7,343.73

Finding the Fourth Proportional to 13,311.81, 18,370.13 and 7,343.73

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Solution

The fourth proportional to 13,311.81, 18,370.13 and 7,343.73 is: 10,134.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.81 : 18,370.13 = 7,343.73 : x
  2. Step 2: Convert to fraction form
    13,311.81/18,370.13 = 7,343.73/x
  3. Step 3: Cross multiply
    13,311.81x = 18,370.13 × 7,343.73
  4. Step 4: Simplify right side
    13,311.81x = 134,905,238.07
  5. Step 5: Solve for x
    x = 134,905,238.07/13,311.81
  6. Step 6: Final answer
    x = 10,134.25

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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.