Home / 11,278.09-15,563.79-6,242.66

Finding the Fourth Proportional to 11,278.09, 15,563.79 and 6,242.66

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Solution

The fourth proportional to 11,278.09, 15,563.79 and 6,242.66 is: 8,614.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.09 : 15,563.79 = 6,242.66 : x
  2. Step 2: Convert to fraction form
    11,278.09/15,563.79 = 6,242.66/x
  3. Step 3: Cross multiply
    11,278.09x = 15,563.79 × 6,242.66
  4. Step 4: Simplify right side
    11,278.09x = 97,159,449.28
  5. Step 5: Solve for x
    x = 97,159,449.28/11,278.09
  6. Step 6: Final answer
    x = 8,614.89

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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.