Home / 10,305.45-14,221.49-5,589.72

Finding the Fourth Proportional to 10,305.45, 14,221.49 and 5,589.72

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Solution

The fourth proportional to 10,305.45, 14,221.49 and 5,589.72 is: 7,713.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,305.45 : 14,221.49 = 5,589.72 : x
  2. Step 2: Convert to fraction form
    10,305.45/14,221.49 = 5,589.72/x
  3. Step 3: Cross multiply
    10,305.45x = 14,221.49 × 5,589.72
  4. Step 4: Simplify right side
    10,305.45x = 79,494,119.13
  5. Step 5: Solve for x
    x = 79,494,119.13/10,305.45
  6. Step 6: Final answer
    x = 7,713.79

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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.