Home / 30,124.62-45,137.52-21,343.86

Finding the Fourth Proportional to 30,124.62, 45,137.52 and 21,343.86

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Solution

The fourth proportional to 30,124.62, 45,137.52 and 21,343.86 is: 31,980.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,124.62 : 45,137.52 = 21,343.86 : x
  2. Step 2: Convert to fraction form
    30,124.62/45,137.52 = 21,343.86/x
  3. Step 3: Cross multiply
    30,124.62x = 45,137.52 × 21,343.86
  4. Step 4: Simplify right side
    30,124.62x = 963,408,907.63
  5. Step 5: Solve for x
    x = 963,408,907.63/30,124.62
  6. Step 6: Final answer
    x = 31,980.78

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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.