Home / 20,707,421.20-31,060,840.20-9,347,851.60

Finding the Fourth Proportional to 20,707,421.20, 31,060,840.20 and 9,347,851.60

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Solution

The fourth proportional to 20,707,421.20, 31,060,840.20 and 9,347,851.60 is: 14,021,645.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707,421.20 : 31,060,840.20 = 9,347,851.60 : x
  2. Step 2: Convert to fraction form
    20,707,421.20/31,060,840.20 = 9,347,851.60/x
  3. Step 3: Cross multiply
    20,707,421.20x = 31,060,840.20 × 9,347,851.60
  4. Step 4: Simplify right side
    20,707,421.20x = 290,352,124,760,914.31
  5. Step 5: Solve for x
    x = 290,352,124,760,914.31/20,707,421.20
  6. Step 6: Final answer
    x = 14,021,645.76

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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.