Home / 19,878.67-29,817.90-5,087.59

Finding the Fourth Proportional to 19,878.67, 29,817.90 and 5,087.59

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Solution

The fourth proportional to 19,878.67, 29,817.90 and 5,087.59 is: 7,631.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.67 : 29,817.90 = 5,087.59 : x
  2. Step 2: Convert to fraction form
    19,878.67/29,817.90 = 5,087.59/x
  3. Step 3: Cross multiply
    19,878.67x = 29,817.90 × 5,087.59
  4. Step 4: Simplify right side
    19,878.67x = 151,701,249.86
  5. Step 5: Solve for x
    x = 151,701,249.86/19,878.67
  6. Step 6: Final answer
    x = 7,631.36

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1.5x scale

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.