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Finding the Fourth Proportional to 14,485.76, 21,728.64 and 6,693.56

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Solution

The fourth proportional to 14,485.76, 21,728.64 and 6,693.56 is: 10,040.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,485.76 : 21,728.64 = 6,693.56 : x
  2. Step 2: Convert to fraction form
    14,485.76/21,728.64 = 6,693.56/x
  3. Step 3: Cross multiply
    14,485.76x = 21,728.64 × 6,693.56
  4. Step 4: Simplify right side
    14,485.76x = 145,441,955.56
  5. Step 5: Solve for x
    x = 145,441,955.56/14,485.76
  6. Step 6: Final answer
    x = 10,040.34

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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.