Home / 20,380.66-30,582.02-8,535.47

Finding the Fourth Proportional to 20,380.66, 30,582.02 and 8,535.47

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Solution

The fourth proportional to 20,380.66, 30,582.02 and 8,535.47 is: 12,807.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380.66 : 30,582.02 = 8,535.47 : x
  2. Step 2: Convert to fraction form
    20,380.66/30,582.02 = 8,535.47/x
  3. Step 3: Cross multiply
    20,380.66x = 30,582.02 × 8,535.47
  4. Step 4: Simplify right side
    20,380.66x = 261,031,914.25
  5. Step 5: Solve for x
    x = 261,031,914.25/20,380.66
  6. Step 6: Final answer
    x = 12,807.82

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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.