Home / 20,200.58-30,295.40-8,511.06

Finding the Fourth Proportional to 20,200.58, 30,295.40 and 8,511.06

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Solution

The fourth proportional to 20,200.58, 30,295.40 and 8,511.06 is: 12,764.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.58 : 30,295.40 = 8,511.06 : x
  2. Step 2: Convert to fraction form
    20,200.58/30,295.40 = 8,511.06/x
  3. Step 3: Cross multiply
    20,200.58x = 30,295.40 × 8,511.06
  4. Step 4: Simplify right side
    20,200.58x = 257,845,967.12
  5. Step 5: Solve for x
    x = 257,845,967.12/20,200.58
  6. Step 6: Final answer
    x = 12,764.29

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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.