Home / 11,278.72-15,564.66-6,243.28

Finding the Fourth Proportional to 11,278.72, 15,564.66 and 6,243.28

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Solution

The fourth proportional to 11,278.72, 15,564.66 and 6,243.28 is: 8,615.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.72 : 15,564.66 = 6,243.28 : x
  2. Step 2: Convert to fraction form
    11,278.72/15,564.66 = 6,243.28/x
  3. Step 3: Cross multiply
    11,278.72x = 15,564.66 × 6,243.28
  4. Step 4: Simplify right side
    11,278.72x = 97,174,530.48
  5. Step 5: Solve for x
    x = 97,174,530.48/11,278.72
  6. Step 6: Final answer
    x = 8,615.74

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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.