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Finding the Fourth Proportional to 18,553.51, 27,831.53 and 7,460.20

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Solution

The fourth proportional to 18,553.51, 27,831.53 and 7,460.20 is: 11,190.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,553.51 : 27,831.53 = 7,460.20 : x
  2. Step 2: Convert to fraction form
    18,553.51/27,831.53 = 7,460.20/x
  3. Step 3: Cross multiply
    18,553.51x = 27,831.53 × 7,460.20
  4. Step 4: Simplify right side
    18,553.51x = 207,628,780.11
  5. Step 5: Solve for x
    x = 207,628,780.11/18,553.51
  6. Step 6: Final answer
    x = 11,190.81

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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.