Home / 19,579.45-29,349.87-12,539.47

Finding the Fourth Proportional to 19,579.45, 29,349.87 and 12,539.47

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Solution

The fourth proportional to 19,579.45, 29,349.87 and 12,539.47 is: 18,796.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,579.45 : 29,349.87 = 12,539.47 : x
  2. Step 2: Convert to fraction form
    19,579.45/29,349.87 = 12,539.47/x
  3. Step 3: Cross multiply
    19,579.45x = 29,349.87 × 12,539.47
  4. Step 4: Simplify right side
    19,579.45x = 368,031,814.37
  5. Step 5: Solve for x
    x = 368,031,814.37/19,579.45
  6. Step 6: Final answer
    x = 18,796.84

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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.