Home / 19,812.01-27,343.38-12,260.78

Finding the Fourth Proportional to 19,812.01, 27,343.38 and 12,260.78

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Solution

The fourth proportional to 19,812.01, 27,343.38 and 12,260.78 is: 16,921.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,812.01 : 27,343.38 = 12,260.78 : x
  2. Step 2: Convert to fraction form
    19,812.01/27,343.38 = 12,260.78/x
  3. Step 3: Cross multiply
    19,812.01x = 27,343.38 × 12,260.78
  4. Step 4: Simplify right side
    19,812.01x = 335,250,999.27
  5. Step 5: Solve for x
    x = 335,250,999.27/19,812.01
  6. Step 6: Final answer
    x = 16,921.60

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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.