Home / 28,151.88-38,850.08-15,406.19

Finding the Fourth Proportional to 28,151.88, 38,850.08 and 15,406.19

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Solution

The fourth proportional to 28,151.88, 38,850.08 and 15,406.19 is: 21,260.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,151.88 : 38,850.08 = 15,406.19 : x
  2. Step 2: Convert to fraction form
    28,151.88/38,850.08 = 15,406.19/x
  3. Step 3: Cross multiply
    28,151.88x = 38,850.08 × 15,406.19
  4. Step 4: Simplify right side
    28,151.88x = 598,531,616.87
  5. Step 5: Solve for x
    x = 598,531,616.87/28,151.88
  6. Step 6: Final answer
    x = 21,260.81

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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.