Home / 28,887.57-39,864.56-18,285.89

Finding the Fourth Proportional to 28,887.57, 39,864.56 and 18,285.89

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Solution

The fourth proportional to 28,887.57, 39,864.56 and 18,285.89 is: 25,234.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,887.57 : 39,864.56 = 18,285.89 : x
  2. Step 2: Convert to fraction form
    28,887.57/39,864.56 = 18,285.89/x
  3. Step 3: Cross multiply
    28,887.57x = 39,864.56 × 18,285.89
  4. Step 4: Simplify right side
    28,887.57x = 728,958,668.31
  5. Step 5: Solve for x
    x = 728,958,668.31/28,887.57
  6. Step 6: Final answer
    x = 25,234.34

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1.5x scale

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.