Home / 20,682.47-31,011.20-9,282.30

Finding the Fourth Proportional to 20,682.47, 31,011.20 and 9,282.30

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Solution

The fourth proportional to 20,682.47, 31,011.20 and 9,282.30 is: 13,917.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.47 : 31,011.20 = 9,282.30 : x
  2. Step 2: Convert to fraction form
    20,682.47/31,011.20 = 9,282.30/x
  3. Step 3: Cross multiply
    20,682.47x = 31,011.20 × 9,282.30
  4. Step 4: Simplify right side
    20,682.47x = 287,855,192.01
  5. Step 5: Solve for x
    x = 287,855,192.01/20,682.47
  6. Step 6: Final answer
    x = 13,917.83

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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.