Home / 28,037.12-42,052.80-9,318.40

Finding the Fourth Proportional to 28,037.12, 42,052.80 and 9,318.40

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Solution

The fourth proportional to 28,037.12, 42,052.80 and 9,318.40 is: 13,976.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,037.12 : 42,052.80 = 9,318.40 : x
  2. Step 2: Convert to fraction form
    28,037.12/42,052.80 = 9,318.40/x
  3. Step 3: Cross multiply
    28,037.12x = 42,052.80 × 9,318.40
  4. Step 4: Simplify right side
    28,037.12x = 391,864,811.52
  5. Step 5: Solve for x
    x = 391,864,811.52/28,037.12
  6. Step 6: Final answer
    x = 13,976.64

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