Home / 20,977,963.20-31,444,826.40-11,983,147.20

Finding the Fourth Proportional to 20,977,963.20, 31,444,826.40 and 11,983,147.20

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Solution

The fourth proportional to 20,977,963.20, 31,444,826.40 and 11,983,147.20 is: 17,962,086.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977,963.20 : 31,444,826.40 = 11,983,147.20 : x
  2. Step 2: Convert to fraction form
    20,977,963.20/31,444,826.40 = 11,983,147.20/x
  3. Step 3: Cross multiply
    20,977,963.20x = 31,444,826.40 × 11,983,147.20
  4. Step 4: Simplify right side
    20,977,963.20x = 376,807,983,429,646.06
  5. Step 5: Solve for x
    x = 376,807,983,429,646.06/20,977,963.20
  6. Step 6: Final answer
    x = 17,962,086.21

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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.