Home / 26,477.08-39,715.56-20,638

Finding the Fourth Proportional to 26,477.08, 39,715.56 and 20,638

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Solution

The fourth proportional to 26,477.08, 39,715.56 and 20,638 is: 30,956.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,477.08 : 39,715.56 = 20,638 : x
  2. Step 2: Convert to fraction form
    26,477.08/39,715.56 = 20,638/x
  3. Step 3: Cross multiply
    26,477.08x = 39,715.56 × 20,638
  4. Step 4: Simplify right side
    26,477.08x = 819,649,727.28
  5. Step 5: Solve for x
    x = 819,649,727.28/26,477.08
  6. Step 6: Final answer
    x = 30,956.95

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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.