Home / 18,815.32-28,239.90-10,057.72

Finding the Fourth Proportional to 18,815.32, 28,239.90 and 10,057.72

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Solution

The fourth proportional to 18,815.32, 28,239.90 and 10,057.72 is: 15,095.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.32 : 28,239.90 = 10,057.72 : x
  2. Step 2: Convert to fraction form
    18,815.32/28,239.90 = 10,057.72/x
  3. Step 3: Cross multiply
    18,815.32x = 28,239.90 × 10,057.72
  4. Step 4: Simplify right side
    18,815.32x = 284,029,007.03
  5. Step 5: Solve for x
    x = 284,029,007.03/18,815.32
  6. Step 6: Final answer
    x = 15,095.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.