Home / 12,490.13-17,237.39-7,186.65

Finding the Fourth Proportional to 12,490.13, 17,237.39 and 7,186.65

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Solution

The fourth proportional to 12,490.13, 17,237.39 and 7,186.65 is: 9,918.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.13 : 17,237.39 = 7,186.65 : x
  2. Step 2: Convert to fraction form
    12,490.13/17,237.39 = 7,186.65/x
  3. Step 3: Cross multiply
    12,490.13x = 17,237.39 × 7,186.65
  4. Step 4: Simplify right side
    12,490.13x = 123,879,052.91
  5. Step 5: Solve for x
    x = 123,879,052.91/12,490.13
  6. Step 6: Final answer
    x = 9,918.16

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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.