Home / 19,406.10-29,051.55-12,839.70

Finding the Fourth Proportional to 19,406.10, 29,051.55 and 12,839.70

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Solution

The fourth proportional to 19,406.10, 29,051.55 and 12,839.70 is: 19,221.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,406.10 : 29,051.55 = 12,839.70 : x
  2. Step 2: Convert to fraction form
    19,406.10/29,051.55 = 12,839.70/x
  3. Step 3: Cross multiply
    19,406.10x = 29,051.55 × 12,839.70
  4. Step 4: Simplify right side
    19,406.10x = 373,013,186.54
  5. Step 5: Solve for x
    x = 373,013,186.54/19,406.10
  6. Step 6: Final answer
    x = 19,221.44

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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.