Home / 18,731.70-28,097.55-9,983.70

Finding the Fourth Proportional to 18,731.70, 28,097.55 and 9,983.70

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Solution

The fourth proportional to 18,731.70, 28,097.55 and 9,983.70 is: 14,975.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,731.70 : 28,097.55 = 9,983.70 : x
  2. Step 2: Convert to fraction form
    18,731.70/28,097.55 = 9,983.70/x
  3. Step 3: Cross multiply
    18,731.70x = 28,097.55 × 9,983.70
  4. Step 4: Simplify right side
    18,731.70x = 280,517,509.94
  5. Step 5: Solve for x
    x = 280,517,509.94/18,731.70
  6. Step 6: Final answer
    x = 14,975.55

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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.