Home / 18,815.96-25,961.88-10,856.50

Finding the Fourth Proportional to 18,815.96, 25,961.88 and 10,856.50

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Solution

The fourth proportional to 18,815.96, 25,961.88 and 10,856.50 is: 14,979.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.96 : 25,961.88 = 10,856.50 : x
  2. Step 2: Convert to fraction form
    18,815.96/25,961.88 = 10,856.50/x
  3. Step 3: Cross multiply
    18,815.96x = 25,961.88 × 10,856.50
  4. Step 4: Simplify right side
    18,815.96x = 281,855,126.03
  5. Step 5: Solve for x
    x = 281,855,126.03/18,815.96
  6. Step 6: Final answer
    x = 14,979.58

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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.