Home / 13,213.06-18,246.36-8,505.52

Finding the Fourth Proportional to 13,213.06, 18,246.36 and 8,505.52

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Solution

The fourth proportional to 13,213.06, 18,246.36 and 8,505.52 is: 11,745.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.06 : 18,246.36 = 8,505.52 : x
  2. Step 2: Convert to fraction form
    13,213.06/18,246.36 = 8,505.52/x
  3. Step 3: Cross multiply
    13,213.06x = 18,246.36 × 8,505.52
  4. Step 4: Simplify right side
    13,213.06x = 155,194,779.91
  5. Step 5: Solve for x
    x = 155,194,779.91/13,213.06
  6. Step 6: Final answer
    x = 11,745.56

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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.