Home / 20,342.32-30,494.70-7,858.60

Finding the Fourth Proportional to 20,342.32, 30,494.70 and 7,858.60

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Solution

The fourth proportional to 20,342.32, 30,494.70 and 7,858.60 is: 11,780.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,342.32 : 30,494.70 = 7,858.60 : x
  2. Step 2: Convert to fraction form
    20,342.32/30,494.70 = 7,858.60/x
  3. Step 3: Cross multiply
    20,342.32x = 30,494.70 × 7,858.60
  4. Step 4: Simplify right side
    20,342.32x = 239,645,649.42
  5. Step 5: Solve for x
    x = 239,645,649.42/20,342.32
  6. Step 6: Final answer
    x = 11,780.64

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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.