Home / 11,415.87-17,129.34-9,937.89

Finding the Fourth Proportional to 11,415.87, 17,129.34 and 9,937.89

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Solution

The fourth proportional to 11,415.87, 17,129.34 and 9,937.89 is: 14,911.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,415.87 : 17,129.34 = 9,937.89 : x
  2. Step 2: Convert to fraction form
    11,415.87/17,129.34 = 9,937.89/x
  3. Step 3: Cross multiply
    11,415.87x = 17,129.34 × 9,937.89
  4. Step 4: Simplify right side
    11,415.87x = 170,229,496.69
  5. Step 5: Solve for x
    x = 170,229,496.69/11,415.87
  6. Step 6: Final answer
    x = 14,911.65

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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.