Home / 13,287.79-19,931.66-3,927.92

Finding the Fourth Proportional to 13,287.79, 19,931.66 and 3,927.92

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Solution

The fourth proportional to 13,287.79, 19,931.66 and 3,927.92 is: 5,891.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.79 : 19,931.66 = 3,927.92 : x
  2. Step 2: Convert to fraction form
    13,287.79/19,931.66 = 3,927.92/x
  3. Step 3: Cross multiply
    13,287.79x = 19,931.66 × 3,927.92
  4. Step 4: Simplify right side
    13,287.79x = 78,289,946.31
  5. Step 5: Solve for x
    x = 78,289,946.31/13,287.79
  6. Step 6: Final answer
    x = 5,891.87

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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.