Home / 20,148.82-30,228.90-7,002.52

Finding the Fourth Proportional to 20,148.82, 30,228.90 and 7,002.52

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Solution

The fourth proportional to 20,148.82, 30,228.90 and 7,002.52 is: 10,505.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.82 : 30,228.90 = 7,002.52 : x
  2. Step 2: Convert to fraction form
    20,148.82/30,228.90 = 7,002.52/x
  3. Step 3: Cross multiply
    20,148.82x = 30,228.90 × 7,002.52
  4. Step 4: Simplify right side
    20,148.82x = 211,678,476.83
  5. Step 5: Solve for x
    x = 211,678,476.83/20,148.82
  6. Step 6: Final answer
    x = 10,505.75

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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.