Home / 28,342.51-39,107.88-16,403.78

Finding the Fourth Proportional to 28,342.51, 39,107.88 and 16,403.78

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Solution

The fourth proportional to 28,342.51, 39,107.88 and 16,403.78 is: 22,634.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,342.51 : 39,107.88 = 16,403.78 : x
  2. Step 2: Convert to fraction form
    28,342.51/39,107.88 = 16,403.78/x
  3. Step 3: Cross multiply
    28,342.51x = 39,107.88 × 16,403.78
  4. Step 4: Simplify right side
    28,342.51x = 641,517,157.56
  5. Step 5: Solve for x
    x = 641,517,157.56/28,342.51
  6. Step 6: Final answer
    x = 22,634.45

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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.