Home / 11,490.71-15,855.26-6,775.92

Finding the Fourth Proportional to 11,490.71, 15,855.26 and 6,775.92

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Solution

The fourth proportional to 11,490.71, 15,855.26 and 6,775.92 is: 9,349.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,490.71 : 15,855.26 = 6,775.92 : x
  2. Step 2: Convert to fraction form
    11,490.71/15,855.26 = 6,775.92/x
  3. Step 3: Cross multiply
    11,490.71x = 15,855.26 × 6,775.92
  4. Step 4: Simplify right side
    11,490.71x = 107,433,939.46
  5. Step 5: Solve for x
    x = 107,433,939.46/11,490.71
  6. Step 6: Final answer
    x = 9,349.64

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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.