Home / 28,608.24-42,921-19,285.68

Finding the Fourth Proportional to 28,608.24, 42,921 and 19,285.68

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Solution

The fourth proportional to 28,608.24, 42,921 and 19,285.68 is: 28,934.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,608.24 : 42,921 = 19,285.68 : x
  2. Step 2: Convert to fraction form
    28,608.24/42,921 = 19,285.68/x
  3. Step 3: Cross multiply
    28,608.24x = 42,921 × 19,285.68
  4. Step 4: Simplify right side
    28,608.24x = 827,760,671.28
  5. Step 5: Solve for x
    x = 827,760,671.28/28,608.24
  6. Step 6: Final answer
    x = 28,934.34

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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.