Home / 17,869.91-26,813.59-12,638.53

Finding the Fourth Proportional to 17,869.91, 26,813.59 and 12,638.53

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Solution

The fourth proportional to 17,869.91, 26,813.59 and 12,638.53 is: 18,963.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,869.91 : 26,813.59 = 12,638.53 : x
  2. Step 2: Convert to fraction form
    17,869.91/26,813.59 = 12,638.53/x
  3. Step 3: Cross multiply
    17,869.91x = 26,813.59 × 12,638.53
  4. Step 4: Simplify right side
    17,869.91x = 338,884,477.97
  5. Step 5: Solve for x
    x = 338,884,477.97/17,869.91
  6. Step 6: Final answer
    x = 18,963.98

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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.