Home / 11,433.78-15,777.48-6,397.74

Finding the Fourth Proportional to 11,433.78, 15,777.48 and 6,397.74

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Solution

The fourth proportional to 11,433.78, 15,777.48 and 6,397.74 is: 8,828.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,433.78 : 15,777.48 = 6,397.74 : x
  2. Step 2: Convert to fraction form
    11,433.78/15,777.48 = 6,397.74/x
  3. Step 3: Cross multiply
    11,433.78x = 15,777.48 × 6,397.74
  4. Step 4: Simplify right side
    11,433.78x = 100,940,214.90
  5. Step 5: Solve for x
    x = 100,940,214.90/11,433.78
  6. Step 6: Final answer
    x = 8,828.25

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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.