Home / 14,310.45-19,749.38-7,939.07

Finding the Fourth Proportional to 14,310.45, 19,749.38 and 7,939.07

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Solution

The fourth proportional to 14,310.45, 19,749.38 and 7,939.07 is: 10,956.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,310.45 : 19,749.38 = 7,939.07 : x
  2. Step 2: Convert to fraction form
    14,310.45/19,749.38 = 7,939.07/x
  3. Step 3: Cross multiply
    14,310.45x = 19,749.38 × 7,939.07
  4. Step 4: Simplify right side
    14,310.45x = 156,791,612.68
  5. Step 5: Solve for x
    x = 156,791,612.68/14,310.45
  6. Step 6: Final answer
    x = 10,956.44

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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.