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Finding the Fourth Proportional to 11,888.90, 16,406.69 and 6,583.60

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Solution

The fourth proportional to 11,888.90, 16,406.69 and 6,583.60 is: 9,085.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,888.90 : 16,406.69 = 6,583.60 : x
  2. Step 2: Convert to fraction form
    11,888.90/16,406.69 = 6,583.60/x
  3. Step 3: Cross multiply
    11,888.90x = 16,406.69 × 6,583.60
  4. Step 4: Simplify right side
    11,888.90x = 108,015,084.28
  5. Step 5: Solve for x
    x = 108,015,084.28/11,888.90
  6. Step 6: Final answer
    x = 9,085.37

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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.