Home / 20,341.32-30,493.20-7,857.60

Finding the Fourth Proportional to 20,341.32, 30,493.20 and 7,857.60

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Solution

The fourth proportional to 20,341.32, 30,493.20 and 7,857.60 is: 11,779.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,341.32 : 30,493.20 = 7,857.60 : x
  2. Step 2: Convert to fraction form
    20,341.32/30,493.20 = 7,857.60/x
  3. Step 3: Cross multiply
    20,341.32x = 30,493.20 × 7,857.60
  4. Step 4: Simplify right side
    20,341.32x = 239,603,368.32
  5. Step 5: Solve for x
    x = 239,603,368.32/20,341.32
  6. Step 6: Final answer
    x = 11,779.15

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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.