Home / 26,431.92-39,638.12-18,530.41

Finding the Fourth Proportional to 26,431.92, 39,638.12 and 18,530.41

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Solution

The fourth proportional to 26,431.92, 39,638.12 and 18,530.41 is: 27,788.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,431.92 : 39,638.12 = 18,530.41 : x
  2. Step 2: Convert to fraction form
    26,431.92/39,638.12 = 18,530.41/x
  3. Step 3: Cross multiply
    26,431.92x = 39,638.12 × 18,530.41
  4. Step 4: Simplify right side
    26,431.92x = 734,510,615.23
  5. Step 5: Solve for x
    x = 734,510,615.23/26,431.92
  6. Step 6: Final answer
    x = 27,788.77

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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.