Home / 18,639.12-25,716.86-12,967.50

Finding the Fourth Proportional to 18,639.12, 25,716.86 and 12,967.50

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Solution

The fourth proportional to 18,639.12, 25,716.86 and 12,967.50 is: 17,891.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.12 : 25,716.86 = 12,967.50 : x
  2. Step 2: Convert to fraction form
    18,639.12/25,716.86 = 12,967.50/x
  3. Step 3: Cross multiply
    18,639.12x = 25,716.86 × 12,967.50
  4. Step 4: Simplify right side
    18,639.12x = 333,483,382.05
  5. Step 5: Solve for x
    x = 333,483,382.05/18,639.12
  6. Step 6: Final answer
    x = 17,891.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.