Home / 18,381.07-27,580.71-7,287.51

Finding the Fourth Proportional to 18,381.07, 27,580.71 and 7,287.51

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Solution

The fourth proportional to 18,381.07, 27,580.71 and 7,287.51 is: 10,934.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.07 : 27,580.71 = 7,287.51 : x
  2. Step 2: Convert to fraction form
    18,381.07/27,580.71 = 7,287.51/x
  3. Step 3: Cross multiply
    18,381.07x = 27,580.71 × 7,287.51
  4. Step 4: Simplify right side
    18,381.07x = 200,994,699.93
  5. Step 5: Solve for x
    x = 200,994,699.93/18,381.07
  6. Step 6: Final answer
    x = 10,934.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.