Home / 18,678.72-25,776.48-10,722.24

Finding the Fourth Proportional to 18,678.72, 25,776.48 and 10,722.24

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Solution

The fourth proportional to 18,678.72, 25,776.48 and 10,722.24 is: 14,796.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678.72 : 25,776.48 = 10,722.24 : x
  2. Step 2: Convert to fraction form
    18,678.72/25,776.48 = 10,722.24/x
  3. Step 3: Cross multiply
    18,678.72x = 25,776.48 × 10,722.24
  4. Step 4: Simplify right side
    18,678.72x = 276,381,604.92
  5. Step 5: Solve for x
    x = 276,381,604.92/18,678.72
  6. Step 6: Final answer
    x = 14,796.60

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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.