Home / 18,734.89-25,855.13-10,778.31

Finding the Fourth Proportional to 18,734.89, 25,855.13 and 10,778.31

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Solution

The fourth proportional to 18,734.89, 25,855.13 and 10,778.31 is: 14,874.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,734.89 : 25,855.13 = 10,778.31 : x
  2. Step 2: Convert to fraction form
    18,734.89/25,855.13 = 10,778.31/x
  3. Step 3: Cross multiply
    18,734.89x = 25,855.13 × 10,778.31
  4. Step 4: Simplify right side
    18,734.89x = 278,674,606.23
  5. Step 5: Solve for x
    x = 278,674,606.23/18,734.89
  6. Step 6: Final answer
    x = 14,874.63

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1.5x scale

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.