Home / 19,121.92-28,665.76-7,432.36

Finding the Fourth Proportional to 19,121.92, 28,665.76 and 7,432.36

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Solution

The fourth proportional to 19,121.92, 28,665.76 and 7,432.36 is: 11,141.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.92 : 28,665.76 = 7,432.36 : x
  2. Step 2: Convert to fraction form
    19,121.92/28,665.76 = 7,432.36/x
  3. Step 3: Cross multiply
    19,121.92x = 28,665.76 × 7,432.36
  4. Step 4: Simplify right side
    19,121.92x = 213,054,247.99
  5. Step 5: Solve for x
    x = 213,054,247.99/19,121.92
  6. Step 6: Final answer
    x = 11,141.89

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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.