Home / 30,315.65-41,837.69-18,379.49

Finding the Fourth Proportional to 30,315.65, 41,837.69 and 18,379.49

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Solution

The fourth proportional to 30,315.65, 41,837.69 and 18,379.49 is: 25,364.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,315.65 : 41,837.69 = 18,379.49 : x
  2. Step 2: Convert to fraction form
    30,315.65/41,837.69 = 18,379.49/x
  3. Step 3: Cross multiply
    30,315.65x = 41,837.69 × 18,379.49
  4. Step 4: Simplify right side
    30,315.65x = 768,955,404.98
  5. Step 5: Solve for x
    x = 768,955,404.98/30,315.65
  6. Step 6: Final answer
    x = 25,364.97

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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.