Home / 11,111.78-15,333.81-6,396.86

Finding the Fourth Proportional to 11,111.78, 15,333.81 and 6,396.86

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Solution

The fourth proportional to 11,111.78, 15,333.81 and 6,396.86 is: 8,827.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,111.78 : 15,333.81 = 6,396.86 : x
  2. Step 2: Convert to fraction form
    11,111.78/15,333.81 = 6,396.86/x
  3. Step 3: Cross multiply
    11,111.78x = 15,333.81 × 6,396.86
  4. Step 4: Simplify right side
    11,111.78x = 98,088,235.84
  5. Step 5: Solve for x
    x = 98,088,235.84/11,111.78
  6. Step 6: Final answer
    x = 8,827.41

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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.