Home / 28,728,015.20-43,092,022.80-17,978,472.80

Finding the Fourth Proportional to 28,728,015.20, 43,092,022.80 and 17,978,472.80

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Solution

The fourth proportional to 28,728,015.20, 43,092,022.80 and 17,978,472.80 is: 26,967,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,728,015.20 : 43,092,022.80 = 17,978,472.80 : x
  2. Step 2: Convert to fraction form
    28,728,015.20/43,092,022.80 = 17,978,472.80/x
  3. Step 3: Cross multiply
    28,728,015.20x = 43,092,022.80 × 17,978,472.80
  4. Step 4: Simplify right side
    28,728,015.20x = 774,728,759,806,779.88
  5. Step 5: Solve for x
    x = 774,728,759,806,779.88/28,728,015.20
  6. Step 6: Final answer
    x = 26,967,709.20

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1.5x scale

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.