Home / 19,893.55-29,821.79-13,656.50

Finding the Fourth Proportional to 19,893.55, 29,821.79 and 13,656.50

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Solution

The fourth proportional to 19,893.55, 29,821.79 and 13,656.50 is: 20,472.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,893.55 : 29,821.79 = 13,656.50 : x
  2. Step 2: Convert to fraction form
    19,893.55/29,821.79 = 13,656.50/x
  3. Step 3: Cross multiply
    19,893.55x = 29,821.79 × 13,656.50
  4. Step 4: Simplify right side
    19,893.55x = 407,261,206.85
  5. Step 5: Solve for x
    x = 407,261,206.85/19,893.55
  6. Step 6: Final answer
    x = 20,472.02

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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.