Home / 11,247.89-15,528.71-7,716.29

Finding the Fourth Proportional to 11,247.89, 15,528.71 and 7,716.29

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Solution

The fourth proportional to 11,247.89, 15,528.71 and 7,716.29 is: 10,653.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,247.89 : 15,528.71 = 7,716.29 : x
  2. Step 2: Convert to fraction form
    11,247.89/15,528.71 = 7,716.29/x
  3. Step 3: Cross multiply
    11,247.89x = 15,528.71 × 7,716.29
  4. Step 4: Simplify right side
    11,247.89x = 119,823,971.33
  5. Step 5: Solve for x
    x = 119,823,971.33/11,247.89
  6. Step 6: Final answer
    x = 10,653.02

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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.