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Finding the Fourth Proportional to 11,688.84, 16,129.98 and 6,652.26

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Solution

The fourth proportional to 11,688.84, 16,129.98 and 6,652.26 is: 9,179.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.84 : 16,129.98 = 6,652.26 : x
  2. Step 2: Convert to fraction form
    11,688.84/16,129.98 = 6,652.26/x
  3. Step 3: Cross multiply
    11,688.84x = 16,129.98 × 6,652.26
  4. Step 4: Simplify right side
    11,688.84x = 107,300,820.75
  5. Step 5: Solve for x
    x = 107,300,820.75/11,688.84
  6. Step 6: Final answer
    x = 9,179.77

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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.