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Finding the Fourth Proportional to 11,777.60, 16,241.92 and 7,737.32

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Solution

The fourth proportional to 11,777.60, 16,241.92 and 7,737.32 is: 10,670.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,777.60 : 16,241.92 = 7,737.32 : x
  2. Step 2: Convert to fraction form
    11,777.60/16,241.92 = 7,737.32/x
  3. Step 3: Cross multiply
    11,777.60x = 16,241.92 × 7,737.32
  4. Step 4: Simplify right side
    11,777.60x = 125,668,953.72
  5. Step 5: Solve for x
    x = 125,668,953.72/11,777.60
  6. Step 6: Final answer
    x = 10,670.16

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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.