Home / 28,120.95-38,808.72-16,187.22

Finding the Fourth Proportional to 28,120.95, 38,808.72 and 16,187.22

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Solution

The fourth proportional to 28,120.95, 38,808.72 and 16,187.22 is: 22,339.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.95 : 38,808.72 = 16,187.22 : x
  2. Step 2: Convert to fraction form
    28,120.95/38,808.72 = 16,187.22/x
  3. Step 3: Cross multiply
    28,120.95x = 38,808.72 × 16,187.22
  4. Step 4: Simplify right side
    28,120.95x = 628,205,288.56
  5. Step 5: Solve for x
    x = 628,205,288.56/28,120.95
  6. Step 6: Final answer
    x = 22,339.40

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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.