Home / 19,878.96-29,818.41-5,087.88

Finding the Fourth Proportional to 19,878.96, 29,818.41 and 5,087.88

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Solution

The fourth proportional to 19,878.96, 29,818.41 and 5,087.88 is: 7,631.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.96 : 29,818.41 = 5,087.88 : x
  2. Step 2: Convert to fraction form
    19,878.96/29,818.41 = 5,087.88/x
  3. Step 3: Cross multiply
    19,878.96x = 29,818.41 × 5,087.88
  4. Step 4: Simplify right side
    19,878.96x = 151,712,491.87
  5. Step 5: Solve for x
    x = 151,712,491.87/19,878.96
  6. Step 6: Final answer
    x = 7,631.81

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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.