Home / 15,379.41-21,223.59-8,305.83

Finding the Fourth Proportional to 15,379.41, 21,223.59 and 8,305.83

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Solution

The fourth proportional to 15,379.41, 21,223.59 and 8,305.83 is: 11,462.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,379.41 : 21,223.59 = 8,305.83 : x
  2. Step 2: Convert to fraction form
    15,379.41/21,223.59 = 8,305.83/x
  3. Step 3: Cross multiply
    15,379.41x = 21,223.59 × 8,305.83
  4. Step 4: Simplify right side
    15,379.41x = 176,279,499.38
  5. Step 5: Solve for x
    x = 176,279,499.38/15,379.41
  6. Step 6: Final answer
    x = 11,462.05

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Double scale
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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.