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Finding the Fourth Proportional to 28,574.32, 42,868.28 and 11,925.08

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Solution

The fourth proportional to 28,574.32, 42,868.28 and 11,925.08 is: 17,890.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,574.32 : 42,868.28 = 11,925.08 : x
  2. Step 2: Convert to fraction form
    28,574.32/42,868.28 = 11,925.08/x
  3. Step 3: Cross multiply
    28,574.32x = 42,868.28 × 11,925.08
  4. Step 4: Simplify right side
    28,574.32x = 511,207,668.46
  5. Step 5: Solve for x
    x = 511,207,668.46/28,574.32
  6. Step 6: Final answer
    x = 17,890.46

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