Home / 19,878.96-29,824.92-9,489.36

Finding the Fourth Proportional to 19,878.96, 29,824.92 and 9,489.36

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Solution

The fourth proportional to 19,878.96, 29,824.92 and 9,489.36 is: 14,237.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.96 : 29,824.92 = 9,489.36 : x
  2. Step 2: Convert to fraction form
    19,878.96/29,824.92 = 9,489.36/x
  3. Step 3: Cross multiply
    19,878.96x = 29,824.92 × 9,489.36
  4. Step 4: Simplify right side
    19,878.96x = 283,019,402.85
  5. Step 5: Solve for x
    x = 283,019,402.85/19,878.96
  6. Step 6: Final answer
    x = 14,237.13

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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.