Home / 13,311.99-18,370.56-7,343.64

Finding the Fourth Proportional to 13,311.99, 18,370.56 and 7,343.64

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Solution

The fourth proportional to 13,311.99, 18,370.56 and 7,343.64 is: 10,134.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.99 : 18,370.56 = 7,343.64 : x
  2. Step 2: Convert to fraction form
    13,311.99/18,370.56 = 7,343.64/x
  3. Step 3: Cross multiply
    13,311.99x = 18,370.56 × 7,343.64
  4. Step 4: Simplify right side
    13,311.99x = 134,906,779.24
  5. Step 5: Solve for x
    x = 134,906,779.24/13,311.99
  6. Step 6: Final answer
    x = 10,134.23

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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.