Home / 21,286,702.72-31,942,653.12-7,832,978.56

Finding the Fourth Proportional to 21,286,702.72, 31,942,653.12 and 7,832,978.56

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Solution

The fourth proportional to 21,286,702.72, 31,942,653.12 and 7,832,978.56 is: 11,754,103.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286,702.72 : 31,942,653.12 = 7,832,978.56 : x
  2. Step 2: Convert to fraction form
    21,286,702.72/31,942,653.12 = 7,832,978.56/x
  3. Step 3: Cross multiply
    21,286,702.72x = 31,942,653.12 × 7,832,978.56
  4. Step 4: Simplify right side
    21,286,702.72x = 250,206,117,038,477.09
  5. Step 5: Solve for x
    x = 250,206,117,038,477.09/21,286,702.72
  6. Step 6: Final answer
    x = 11,754,103.97

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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.