Home / 11,291.72-15,577.20-7,516.64

Finding the Fourth Proportional to 11,291.72, 15,577.20 and 7,516.64

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Solution

The fourth proportional to 11,291.72, 15,577.20 and 7,516.64 is: 10,369.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,291.72 : 15,577.20 = 7,516.64 : x
  2. Step 2: Convert to fraction form
    11,291.72/15,577.20 = 7,516.64/x
  3. Step 3: Cross multiply
    11,291.72x = 15,577.20 × 7,516.64
  4. Step 4: Simplify right side
    11,291.72x = 117,088,204.61
  5. Step 5: Solve for x
    x = 117,088,204.61/11,291.72
  6. Step 6: Final answer
    x = 10,369.39

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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.