Home / 28,545.57-42,818.49-7,769.07

Finding the Fourth Proportional to 28,545.57, 42,818.49 and 7,769.07

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Solution

The fourth proportional to 28,545.57, 42,818.49 and 7,769.07 is: 11,653.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,545.57 : 42,818.49 = 7,769.07 : x
  2. Step 2: Convert to fraction form
    28,545.57/42,818.49 = 7,769.07/x
  3. Step 3: Cross multiply
    28,545.57x = 42,818.49 × 7,769.07
  4. Step 4: Simplify right side
    28,545.57x = 332,659,846.10
  5. Step 5: Solve for x
    x = 332,659,846.10/28,545.57
  6. Step 6: Final answer
    x = 11,653.64

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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.