Home / 28,687.89-42,983.30-17,571.39

Finding the Fourth Proportional to 28,687.89, 42,983.30 and 17,571.39

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Solution

The fourth proportional to 28,687.89, 42,983.30 and 17,571.39 is: 26,327.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,687.89 : 42,983.30 = 17,571.39 : x
  2. Step 2: Convert to fraction form
    28,687.89/42,983.30 = 17,571.39/x
  3. Step 3: Cross multiply
    28,687.89x = 42,983.30 × 17,571.39
  4. Step 4: Simplify right side
    28,687.89x = 755,276,327.79
  5. Step 5: Solve for x
    x = 755,276,327.79/28,687.89
  6. Step 6: Final answer
    x = 26,327.36

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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.