Home / 18,972.01-26,180.23-11,420.79

Finding the Fourth Proportional to 18,972.01, 26,180.23 and 11,420.79

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Solution

The fourth proportional to 18,972.01, 26,180.23 and 11,420.79 is: 15,760.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.01 : 26,180.23 = 11,420.79 : x
  2. Step 2: Convert to fraction form
    18,972.01/26,180.23 = 11,420.79/x
  3. Step 3: Cross multiply
    18,972.01x = 26,180.23 × 11,420.79
  4. Step 4: Simplify right side
    18,972.01x = 298,998,908.98
  5. Step 5: Solve for x
    x = 298,998,908.98/18,972.01
  6. Step 6: Final answer
    x = 15,760.00

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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.