Home / 20,398.08-30,598.58-8,539.92

Finding the Fourth Proportional to 20,398.08, 30,598.58 and 8,539.92

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Solution

The fourth proportional to 20,398.08, 30,598.58 and 8,539.92 is: 12,810.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,398.08 : 30,598.58 = 8,539.92 : x
  2. Step 2: Convert to fraction form
    20,398.08/30,598.58 = 8,539.92/x
  3. Step 3: Cross multiply
    20,398.08x = 30,598.58 × 8,539.92
  4. Step 4: Simplify right side
    20,398.08x = 261,309,446.66
  5. Step 5: Solve for x
    x = 261,309,446.66/20,398.08
  6. Step 6: Final answer
    x = 12,810.49

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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.