Home / 11,161.41-15,402.64-6,448.29

Finding the Fourth Proportional to 11,161.41, 15,402.64 and 6,448.29

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Solution

The fourth proportional to 11,161.41, 15,402.64 and 6,448.29 is: 8,898.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.41 : 15,402.64 = 6,448.29 : x
  2. Step 2: Convert to fraction form
    11,161.41/15,402.64 = 6,448.29/x
  3. Step 3: Cross multiply
    11,161.41x = 15,402.64 × 6,448.29
  4. Step 4: Simplify right side
    11,161.41x = 99,320,689.49
  5. Step 5: Solve for x
    x = 99,320,689.49/11,161.41
  6. Step 6: Final answer
    x = 8,898.58

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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.