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Finding the Fourth Proportional to 11,893.70, 16,363 and 11,565.65

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Solution

The fourth proportional to 11,893.70, 16,363 and 11,565.65 is: 15,911.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,893.70 : 16,363 = 11,565.65 : x
  2. Step 2: Convert to fraction form
    11,893.70/16,363 = 11,565.65/x
  3. Step 3: Cross multiply
    11,893.70x = 16,363 × 11,565.65
  4. Step 4: Simplify right side
    11,893.70x = 189,248,730.95
  5. Step 5: Solve for x
    x = 189,248,730.95/11,893.70
  6. Step 6: Final answer
    x = 15,911.68

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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.