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Finding the Fourth Proportional to 30,888.74, 42,631.02 and 19,559.30

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Solution

The fourth proportional to 30,888.74, 42,631.02 and 19,559.30 is: 26,994.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,888.74 : 42,631.02 = 19,559.30 : x
  2. Step 2: Convert to fraction form
    30,888.74/42,631.02 = 19,559.30/x
  3. Step 3: Cross multiply
    30,888.74x = 42,631.02 × 19,559.30
  4. Step 4: Simplify right side
    30,888.74x = 833,832,696.33
  5. Step 5: Solve for x
    x = 833,832,696.33/30,888.74
  6. Step 6: Final answer
    x = 26,994.72

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