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Finding the Fourth Proportional to 11,883, 16,402.86 and 6,915

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Solution

The fourth proportional to 11,883, 16,402.86 and 6,915 is: 9,545.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,883 : 16,402.86 = 6,915 : x
  2. Step 2: Convert to fraction form
    11,883/16,402.86 = 6,915/x
  3. Step 3: Cross multiply
    11,883x = 16,402.86 × 6,915
  4. Step 4: Simplify right side
    11,883x = 113,425,776.90
  5. Step 5: Solve for x
    x = 113,425,776.90/11,883
  6. Step 6: Final answer
    x = 9,545.21

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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.