Home / 19,890.05-29,832.85-5,099.31

Finding the Fourth Proportional to 19,890.05, 29,832.85 and 5,099.31

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Solution

The fourth proportional to 19,890.05, 29,832.85 and 5,099.31 is: 7,648.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.05 : 29,832.85 = 5,099.31 : x
  2. Step 2: Convert to fraction form
    19,890.05/29,832.85 = 5,099.31/x
  3. Step 3: Cross multiply
    19,890.05x = 29,832.85 × 5,099.31
  4. Step 4: Simplify right side
    19,890.05x = 152,127,039.90
  5. Step 5: Solve for x
    x = 152,127,039.90/19,890.05
  6. Step 6: Final answer
    x = 7,648.40

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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.