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Finding the Fourth Proportional to 30,428.19, 45,643.91 and 9,653.31

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Solution

The fourth proportional to 30,428.19, 45,643.91 and 9,653.31 is: 14,480.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,428.19 : 45,643.91 = 9,653.31 : x
  2. Step 2: Convert to fraction form
    30,428.19/45,643.91 = 9,653.31/x
  3. Step 3: Cross multiply
    30,428.19x = 45,643.91 × 9,653.31
  4. Step 4: Simplify right side
    30,428.19x = 440,614,764.58
  5. Step 5: Solve for x
    x = 440,614,764.58/30,428.19
  6. Step 6: Final answer
    x = 14,480.48

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