Home / 20,490.12-30,741.24-7,342.20

Finding the Fourth Proportional to 20,490.12, 30,741.24 and 7,342.20

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Solution

The fourth proportional to 20,490.12, 30,741.24 and 7,342.20 is: 11,015.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.12 : 30,741.24 = 7,342.20 : x
  2. Step 2: Convert to fraction form
    20,490.12/30,741.24 = 7,342.20/x
  3. Step 3: Cross multiply
    20,490.12x = 30,741.24 × 7,342.20
  4. Step 4: Simplify right side
    20,490.12x = 225,708,332.33
  5. Step 5: Solve for x
    x = 225,708,332.33/20,490.12
  6. Step 6: Final answer
    x = 11,015.47

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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.