Home / 19,810,005.80-29,715,008.70-13,385,474.60

Finding the Fourth Proportional to 19,810,005.80, 29,715,008.70 and 13,385,474.60

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Solution

The fourth proportional to 19,810,005.80, 29,715,008.70 and 13,385,474.60 is: 20,078,211.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,810,005.80 : 29,715,008.70 = 13,385,474.60 : x
  2. Step 2: Convert to fraction form
    19,810,005.80/29,715,008.70 = 13,385,474.60/x
  3. Step 3: Cross multiply
    19,810,005.80x = 29,715,008.70 × 13,385,474.60
  4. Step 4: Simplify right side
    19,810,005.80x = 397,749,494,192,629
  5. Step 5: Solve for x
    x = 397,749,494,192,629/19,810,005.80
  6. Step 6: Final answer
    x = 20,078,211.90

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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.