Home / 18,213.54-27,192.55-15,411.78

Finding the Fourth Proportional to 18,213.54, 27,192.55 and 15,411.78

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Solution

The fourth proportional to 18,213.54, 27,192.55 and 15,411.78 is: 23,009.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.54 : 27,192.55 = 15,411.78 : x
  2. Step 2: Convert to fraction form
    18,213.54/27,192.55 = 15,411.78/x
  3. Step 3: Cross multiply
    18,213.54x = 27,192.55 × 15,411.78
  4. Step 4: Simplify right side
    18,213.54x = 419,085,598.24
  5. Step 5: Solve for x
    x = 419,085,598.24/18,213.54
  6. Step 6: Final answer
    x = 23,009.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.