Home / 19,721.72-29,582.64-4,930.65

Finding the Fourth Proportional to 19,721.72, 29,582.64 and 4,930.65

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Solution

The fourth proportional to 19,721.72, 29,582.64 and 4,930.65 is: 7,395.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.72 : 29,582.64 = 4,930.65 : x
  2. Step 2: Convert to fraction form
    19,721.72/29,582.64 = 4,930.65/x
  3. Step 3: Cross multiply
    19,721.72x = 29,582.64 × 4,930.65
  4. Step 4: Simplify right side
    19,721.72x = 145,861,643.92
  5. Step 5: Solve for x
    x = 145,861,643.92/19,721.72
  6. Step 6: Final answer
    x = 7,395.99

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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.