Home / 20,666.30-30,998.77-8,979.52

Finding the Fourth Proportional to 20,666.30, 30,998.77 and 8,979.52

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Solution

The fourth proportional to 20,666.30, 30,998.77 and 8,979.52 is: 13,468.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.30 : 30,998.77 = 8,979.52 : x
  2. Step 2: Convert to fraction form
    20,666.30/30,998.77 = 8,979.52/x
  3. Step 3: Cross multiply
    20,666.30x = 30,998.77 × 8,979.52
  4. Step 4: Simplify right side
    20,666.30x = 278,354,033.37
  5. Step 5: Solve for x
    x = 278,354,033.37/20,666.30
  6. Step 6: Final answer
    x = 13,468.98

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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.