Home / 18,379.13-25,363.39-9,995.81

Finding the Fourth Proportional to 18,379.13, 25,363.39 and 9,995.81

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Solution

The fourth proportional to 18,379.13, 25,363.39 and 9,995.81 is: 13,794.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.13 : 25,363.39 = 9,995.81 : x
  2. Step 2: Convert to fraction form
    18,379.13/25,363.39 = 9,995.81/x
  3. Step 3: Cross multiply
    18,379.13x = 25,363.39 × 9,995.81
  4. Step 4: Simplify right side
    18,379.13x = 253,527,475.59
  5. Step 5: Solve for x
    x = 253,527,475.59/18,379.13
  6. Step 6: Final answer
    x = 13,794.32

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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.