Home / 20,080.32-30,139.92-9,699.36

Finding the Fourth Proportional to 20,080.32, 30,139.92 and 9,699.36

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Solution

The fourth proportional to 20,080.32, 30,139.92 and 9,699.36 is: 14,558.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.32 : 30,139.92 = 9,699.36 : x
  2. Step 2: Convert to fraction form
    20,080.32/30,139.92 = 9,699.36/x
  3. Step 3: Cross multiply
    20,080.32x = 30,139.92 × 9,699.36
  4. Step 4: Simplify right side
    20,080.32x = 292,337,934.45
  5. Step 5: Solve for x
    x = 292,337,934.45/20,080.32
  6. Step 6: Final answer
    x = 14,558.43

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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.