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Finding the Fourth Proportional to 14,485.86, 21,728.79 and 7,558.74

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Solution

The fourth proportional to 14,485.86, 21,728.79 and 7,558.74 is: 11,338.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,485.86 : 21,728.79 = 7,558.74 : x
  2. Step 2: Convert to fraction form
    14,485.86/21,728.79 = 7,558.74/x
  3. Step 3: Cross multiply
    14,485.86x = 21,728.79 × 7,558.74
  4. Step 4: Simplify right side
    14,485.86x = 164,242,274.12
  5. Step 5: Solve for x
    x = 164,242,274.12/14,485.86
  6. Step 6: Final answer
    x = 11,338.11

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.