Home / 20,705,458.40-31,086,181.20-13,147,186.40

Finding the Fourth Proportional to 20,705,458.40, 31,086,181.20 and 13,147,186.40

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Solution

The fourth proportional to 20,705,458.40, 31,086,181.20 and 13,147,186.40 is: 19,738,554.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705,458.40 : 31,086,181.20 = 13,147,186.40 : x
  2. Step 2: Convert to fraction form
    20,705,458.40/31,086,181.20 = 13,147,186.40/x
  3. Step 3: Cross multiply
    20,705,458.40x = 31,086,181.20 × 13,147,186.40
  4. Step 4: Simplify right side
    20,705,458.40x = 408,695,818,700,575.69
  5. Step 5: Solve for x
    x = 408,695,818,700,575.69/20,705,458.40
  6. Step 6: Final answer
    x = 19,738,554.48

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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.