Home / 11,115.64-15,339.90-7,580.44

Finding the Fourth Proportional to 11,115.64, 15,339.90 and 7,580.44

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Solution

The fourth proportional to 11,115.64, 15,339.90 and 7,580.44 is: 10,461.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.64 : 15,339.90 = 7,580.44 : x
  2. Step 2: Convert to fraction form
    11,115.64/15,339.90 = 7,580.44/x
  3. Step 3: Cross multiply
    11,115.64x = 15,339.90 × 7,580.44
  4. Step 4: Simplify right side
    11,115.64x = 116,283,191.56
  5. Step 5: Solve for x
    x = 116,283,191.56/11,115.64
  6. Step 6: Final answer
    x = 10,461.22

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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.