Home / 11,345.87-17,021.52-11,157.57

Finding the Fourth Proportional to 11,345.87, 17,021.52 and 11,157.57

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Solution

The fourth proportional to 11,345.87, 17,021.52 and 11,157.57 is: 16,739.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,345.87 : 17,021.52 = 11,157.57 : x
  2. Step 2: Convert to fraction form
    11,345.87/17,021.52 = 11,157.57/x
  3. Step 3: Cross multiply
    11,345.87x = 17,021.52 × 11,157.57
  4. Step 4: Simplify right side
    11,345.87x = 189,918,800.91
  5. Step 5: Solve for x
    x = 189,918,800.91/11,345.87
  6. Step 6: Final answer
    x = 16,739.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.