Home / 18,678.46-28,007.96-5,529.05

Finding the Fourth Proportional to 18,678.46, 28,007.96 and 5,529.05

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Solution

The fourth proportional to 18,678.46, 28,007.96 and 5,529.05 is: 8,290.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678.46 : 28,007.96 = 5,529.05 : x
  2. Step 2: Convert to fraction form
    18,678.46/28,007.96 = 5,529.05/x
  3. Step 3: Cross multiply
    18,678.46x = 28,007.96 × 5,529.05
  4. Step 4: Simplify right side
    18,678.46x = 154,857,411.24
  5. Step 5: Solve for x
    x = 154,857,411.24/18,678.46
  6. Step 6: Final answer
    x = 8,290.70

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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.