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Finding the Fourth Proportional to 28,686.89, 42,981.81 and 17,570.39

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Solution

The fourth proportional to 28,686.89, 42,981.81 and 17,570.39 is: 26,325.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,686.89 : 42,981.81 = 17,570.39 : x
  2. Step 2: Convert to fraction form
    28,686.89/42,981.81 = 17,570.39/x
  3. Step 3: Cross multiply
    28,686.89x = 42,981.81 × 17,570.39
  4. Step 4: Simplify right side
    28,686.89x = 755,206,883.81
  5. Step 5: Solve for x
    x = 755,206,883.81/28,686.89
  6. Step 6: Final answer
    x = 26,325.85

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