Home / 13,345.56-18,416.62-8,629.72

Finding the Fourth Proportional to 13,345.56, 18,416.62 and 8,629.72

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Solution

The fourth proportional to 13,345.56, 18,416.62 and 8,629.72 is: 11,908.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.56 : 18,416.62 = 8,629.72 : x
  2. Step 2: Convert to fraction form
    13,345.56/18,416.62 = 8,629.72/x
  3. Step 3: Cross multiply
    13,345.56x = 18,416.62 × 8,629.72
  4. Step 4: Simplify right side
    13,345.56x = 158,930,273.95
  5. Step 5: Solve for x
    x = 158,930,273.95/13,345.56
  6. Step 6: Final answer
    x = 11,908.85

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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.