Home / 21,039,779.70-31,551,796.35-7,387,650.90

Finding the Fourth Proportional to 21,039,779.70, 31,551,796.35 and 7,387,650.90

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Solution

The fourth proportional to 21,039,779.70, 31,551,796.35 and 7,387,650.90 is: 11,078,711.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,039,779.70 : 31,551,796.35 = 7,387,650.90 : x
  2. Step 2: Convert to fraction form
    21,039,779.70/31,551,796.35 = 7,387,650.90/x
  3. Step 3: Cross multiply
    21,039,779.70x = 31,551,796.35 × 7,387,650.90
  4. Step 4: Simplify right side
    21,039,779.70x = 233,093,656,701,694.25
  5. Step 5: Solve for x
    x = 233,093,656,701,694.25/21,039,779.70
  6. Step 6: Final answer
    x = 11,078,711.85

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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.