Home / 13,020.56-19,530.86-3,159.76

Finding the Fourth Proportional to 13,020.56, 19,530.86 and 3,159.76

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Solution

The fourth proportional to 13,020.56, 19,530.86 and 3,159.76 is: 4,739.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.56 : 19,530.86 = 3,159.76 : x
  2. Step 2: Convert to fraction form
    13,020.56/19,530.86 = 3,159.76/x
  3. Step 3: Cross multiply
    13,020.56x = 19,530.86 × 3,159.76
  4. Step 4: Simplify right side
    13,020.56x = 61,712,830.19
  5. Step 5: Solve for x
    x = 61,712,830.19/13,020.56
  6. Step 6: Final answer
    x = 4,739.64

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