Home / 28,711.08-39,619.26-16,137.72

Finding the Fourth Proportional to 28,711.08, 39,619.26 and 16,137.72

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Solution

The fourth proportional to 28,711.08, 39,619.26 and 16,137.72 is: 22,268.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,711.08 : 39,619.26 = 16,137.72 : x
  2. Step 2: Convert to fraction form
    28,711.08/39,619.26 = 16,137.72/x
  3. Step 3: Cross multiply
    28,711.08x = 39,619.26 × 16,137.72
  4. Step 4: Simplify right side
    28,711.08x = 639,364,524.49
  5. Step 5: Solve for x
    x = 639,364,524.49/28,711.08
  6. Step 6: Final answer
    x = 22,268.91

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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.