Home / 10,881.21-15,015.78-6,165.48

Finding the Fourth Proportional to 10,881.21, 15,015.78 and 6,165.48

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Solution

The fourth proportional to 10,881.21, 15,015.78 and 6,165.48 is: 8,508.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,881.21 : 15,015.78 = 6,165.48 : x
  2. Step 2: Convert to fraction form
    10,881.21/15,015.78 = 6,165.48/x
  3. Step 3: Cross multiply
    10,881.21x = 15,015.78 × 6,165.48
  4. Step 4: Simplify right side
    10,881.21x = 92,579,491.27
  5. Step 5: Solve for x
    x = 92,579,491.27/10,881.21
  6. Step 6: Final answer
    x = 8,508.20

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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.