Home / 18,318.87-25,281.39-10,253.31

Finding the Fourth Proportional to 18,318.87, 25,281.39 and 10,253.31

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Solution

The fourth proportional to 18,318.87, 25,281.39 and 10,253.31 is: 14,150.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,318.87 : 25,281.39 = 10,253.31 : x
  2. Step 2: Convert to fraction form
    18,318.87/25,281.39 = 10,253.31/x
  3. Step 3: Cross multiply
    18,318.87x = 25,281.39 × 10,253.31
  4. Step 4: Simplify right side
    18,318.87x = 259,217,928.90
  5. Step 5: Solve for x
    x = 259,217,928.90/18,318.87
  6. Step 6: Final answer
    x = 14,150.32

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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.