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Finding the Fourth Proportional to 11,685.50, 16,125.95 and 6,580.60

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Solution

The fourth proportional to 11,685.50, 16,125.95 and 6,580.60 is: 9,081.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.50 : 16,125.95 = 6,580.60 : x
  2. Step 2: Convert to fraction form
    11,685.50/16,125.95 = 6,580.60/x
  3. Step 3: Cross multiply
    11,685.50x = 16,125.95 × 6,580.60
  4. Step 4: Simplify right side
    11,685.50x = 106,118,426.57
  5. Step 5: Solve for x
    x = 106,118,426.57/11,685.50
  6. Step 6: Final answer
    x = 9,081.21

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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.