Home / 31,082.13-42,880.50-21,656.16

Finding the Fourth Proportional to 31,082.13, 42,880.50 and 21,656.16

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Solution

The fourth proportional to 31,082.13, 42,880.50 and 21,656.16 is: 29,876.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,082.13 : 42,880.50 = 21,656.16 : x
  2. Step 2: Convert to fraction form
    31,082.13/42,880.50 = 21,656.16/x
  3. Step 3: Cross multiply
    31,082.13x = 42,880.50 × 21,656.16
  4. Step 4: Simplify right side
    31,082.13x = 928,626,968.88
  5. Step 5: Solve for x
    x = 928,626,968.88/31,082.13
  6. Step 6: Final answer
    x = 29,876.56

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