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Finding the Fourth Proportional to 6,700.80, 10,051.20 and 6,416.40

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Solution

The fourth proportional to 6,700.80, 10,051.20 and 6,416.40 is: 9,624.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,700.80 : 10,051.20 = 6,416.40 : x
  2. Step 2: Convert to fraction form
    6,700.80/10,051.20 = 6,416.40/x
  3. Step 3: Cross multiply
    6,700.80x = 10,051.20 × 6,416.40
  4. Step 4: Simplify right side
    6,700.80x = 64,492,519.68
  5. Step 5: Solve for x
    x = 64,492,519.68/6,700.80
  6. Step 6: Final answer
    x = 9,624.60

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