Home / 17,638.88-26,439.68-6,386.72

Finding the Fourth Proportional to 17,638.88, 26,439.68 and 6,386.72

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Solution

The fourth proportional to 17,638.88, 26,439.68 and 6,386.72 is: 9,573.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,638.88 : 26,439.68 = 6,386.72 : x
  2. Step 2: Convert to fraction form
    17,638.88/26,439.68 = 6,386.72/x
  3. Step 3: Cross multiply
    17,638.88x = 26,439.68 × 6,386.72
  4. Step 4: Simplify right side
    17,638.88x = 168,862,833.05
  5. Step 5: Solve for x
    x = 168,862,833.05/17,638.88
  6. Step 6: Final answer
    x = 9,573.33

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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.