Home / 28,519.48-39,350.70-15,943.80

Finding the Fourth Proportional to 28,519.48, 39,350.70 and 15,943.80

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Solution

The fourth proportional to 28,519.48, 39,350.70 and 15,943.80 is: 21,998.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.48 : 39,350.70 = 15,943.80 : x
  2. Step 2: Convert to fraction form
    28,519.48/39,350.70 = 15,943.80/x
  3. Step 3: Cross multiply
    28,519.48x = 39,350.70 × 15,943.80
  4. Step 4: Simplify right side
    28,519.48x = 627,399,690.66
  5. Step 5: Solve for x
    x = 627,399,690.66/28,519.48
  6. Step 6: Final answer
    x = 21,998.99

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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.