Home / 18,345.69-25,317.42-11,175.91

Finding the Fourth Proportional to 18,345.69, 25,317.42 and 11,175.91

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Solution

The fourth proportional to 18,345.69, 25,317.42 and 11,175.91 is: 15,422.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.69 : 25,317.42 = 11,175.91 : x
  2. Step 2: Convert to fraction form
    18,345.69/25,317.42 = 11,175.91/x
  3. Step 3: Cross multiply
    18,345.69x = 25,317.42 × 11,175.91
  4. Step 4: Simplify right side
    18,345.69x = 282,945,207.35
  5. Step 5: Solve for x
    x = 282,945,207.35/18,345.69
  6. Step 6: Final answer
    x = 15,422.98

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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.