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Finding the Fourth Proportional to 11,813.91, 17,718.42 and 5,235.90

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Solution

The fourth proportional to 11,813.91, 17,718.42 and 5,235.90 is: 7,852.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,813.91 : 17,718.42 = 5,235.90 : x
  2. Step 2: Convert to fraction form
    11,813.91/17,718.42 = 5,235.90/x
  3. Step 3: Cross multiply
    11,813.91x = 17,718.42 × 5,235.90
  4. Step 4: Simplify right side
    11,813.91x = 92,771,875.28
  5. Step 5: Solve for x
    x = 92,771,875.28/11,813.91
  6. Step 6: Final answer
    x = 7,852.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.