Home / 28,269.88-39,012.57-17,665.63

Finding the Fourth Proportional to 28,269.88, 39,012.57 and 17,665.63

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Solution

The fourth proportional to 28,269.88, 39,012.57 and 17,665.63 is: 24,378.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,269.88 : 39,012.57 = 17,665.63 : x
  2. Step 2: Convert to fraction form
    28,269.88/39,012.57 = 17,665.63/x
  3. Step 3: Cross multiply
    28,269.88x = 39,012.57 × 17,665.63
  4. Step 4: Simplify right side
    28,269.88x = 689,181,529.44
  5. Step 5: Solve for x
    x = 689,181,529.44/28,269.88
  6. Step 6: Final answer
    x = 24,378.65

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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.