Home / 20,190.86-27,844.06-15,402.30

Finding the Fourth Proportional to 20,190.86, 27,844.06 and 15,402.30

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Solution

The fourth proportional to 20,190.86, 27,844.06 and 15,402.30 is: 21,240.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.86 : 27,844.06 = 15,402.30 : x
  2. Step 2: Convert to fraction form
    20,190.86/27,844.06 = 15,402.30/x
  3. Step 3: Cross multiply
    20,190.86x = 27,844.06 × 15,402.30
  4. Step 4: Simplify right side
    20,190.86x = 428,862,565.34
  5. Step 5: Solve for x
    x = 428,862,565.34/20,190.86
  6. Step 6: Final answer
    x = 21,240.43

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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.