Home / 11,890.24-16,416.48-7,415.80

Finding the Fourth Proportional to 11,890.24, 16,416.48 and 7,415.80

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Solution

The fourth proportional to 11,890.24, 16,416.48 and 7,415.80 is: 10,238.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,890.24 : 16,416.48 = 7,415.80 : x
  2. Step 2: Convert to fraction form
    11,890.24/16,416.48 = 7,415.80/x
  3. Step 3: Cross multiply
    11,890.24x = 16,416.48 × 7,415.80
  4. Step 4: Simplify right side
    11,890.24x = 121,741,332.38
  5. Step 5: Solve for x
    x = 121,741,332.38/11,890.24
  6. Step 6: Final answer
    x = 10,238.76

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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.