Home / 19,660.65-27,140.63-12,946.56

Finding the Fourth Proportional to 19,660.65, 27,140.63 and 12,946.56

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Solution

The fourth proportional to 19,660.65, 27,140.63 and 12,946.56 is: 17,872.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,660.65 : 27,140.63 = 12,946.56 : x
  2. Step 2: Convert to fraction form
    19,660.65/27,140.63 = 12,946.56/x
  3. Step 3: Cross multiply
    19,660.65x = 27,140.63 × 12,946.56
  4. Step 4: Simplify right side
    19,660.65x = 351,377,794.73
  5. Step 5: Solve for x
    x = 351,377,794.73/19,660.65
  6. Step 6: Final answer
    x = 17,872.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.