Home / 20,605.32-30,909.60-8,124.48

Finding the Fourth Proportional to 20,605.32, 30,909.60 and 8,124.48

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Solution

The fourth proportional to 20,605.32, 30,909.60 and 8,124.48 is: 12,187.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,605.32 : 30,909.60 = 8,124.48 : x
  2. Step 2: Convert to fraction form
    20,605.32/30,909.60 = 8,124.48/x
  3. Step 3: Cross multiply
    20,605.32x = 30,909.60 × 8,124.48
  4. Step 4: Simplify right side
    20,605.32x = 251,124,427.01
  5. Step 5: Solve for x
    x = 251,124,427.01/20,605.32
  6. Step 6: Final answer
    x = 12,187.36

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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.