Home / 28,043,908.72-38,700,447.05-15,653,285.26

Finding the Fourth Proportional to 28,043,908.72, 38,700,447.05 and 15,653,285.26

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Solution

The fourth proportional to 28,043,908.72, 38,700,447.05 and 15,653,285.26 is: 21,601,451.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,043,908.72 : 38,700,447.05 = 15,653,285.26 : x
  2. Step 2: Convert to fraction form
    28,043,908.72/38,700,447.05 = 15,653,285.26/x
  3. Step 3: Cross multiply
    28,043,908.72x = 38,700,447.05 × 15,653,285.26
  4. Step 4: Simplify right side
    28,043,908.72x = 605,789,137,305,557.62
  5. Step 5: Solve for x
    x = 605,789,137,305,557.62/28,043,908.72
  6. Step 6: Final answer
    x = 21,601,451.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.