Home / 20,439.67-28,196.89-17,782.87

Finding the Fourth Proportional to 20,439.67, 28,196.89 and 17,782.87

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Solution

The fourth proportional to 20,439.67, 28,196.89 and 17,782.87 is: 24,531.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.67 : 28,196.89 = 17,782.87 : x
  2. Step 2: Convert to fraction form
    20,439.67/28,196.89 = 17,782.87/x
  3. Step 3: Cross multiply
    20,439.67x = 28,196.89 × 17,782.87
  4. Step 4: Simplify right side
    20,439.67x = 501,421,629.27
  5. Step 5: Solve for x
    x = 501,421,629.27/20,439.67
  6. Step 6: Final answer
    x = 24,531.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.