Home / 28,977.48-40,007.52-19,917.90

Finding the Fourth Proportional to 28,977.48, 40,007.52 and 19,917.90

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Solution

The fourth proportional to 28,977.48, 40,007.52 and 19,917.90 is: 27,499.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,977.48 : 40,007.52 = 19,917.90 : x
  2. Step 2: Convert to fraction form
    28,977.48/40,007.52 = 19,917.90/x
  3. Step 3: Cross multiply
    28,977.48x = 40,007.52 × 19,917.90
  4. Step 4: Simplify right side
    28,977.48x = 796,865,782.61
  5. Step 5: Solve for x
    x = 796,865,782.61/28,977.48
  6. Step 6: Final answer
    x = 27,499.49

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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.