Home / 11,774.79-16,249.16-6,397.20

Finding the Fourth Proportional to 11,774.79, 16,249.16 and 6,397.20

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Solution

The fourth proportional to 11,774.79, 16,249.16 and 6,397.20 is: 8,828.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,774.79 : 16,249.16 = 6,397.20 : x
  2. Step 2: Convert to fraction form
    11,774.79/16,249.16 = 6,397.20/x
  3. Step 3: Cross multiply
    11,774.79x = 16,249.16 × 6,397.20
  4. Step 4: Simplify right side
    11,774.79x = 103,949,094.37
  5. Step 5: Solve for x
    x = 103,949,094.37/11,774.79
  6. Step 6: Final answer
    x = 8,828.11

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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.