Home / 28,072.60-38,742.42-16,138.12

Finding the Fourth Proportional to 28,072.60, 38,742.42 and 16,138.12

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Solution

The fourth proportional to 28,072.60, 38,742.42 and 16,138.12 is: 22,271.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,072.60 : 38,742.42 = 16,138.12 : x
  2. Step 2: Convert to fraction form
    28,072.60/38,742.42 = 16,138.12/x
  3. Step 3: Cross multiply
    28,072.60x = 38,742.42 × 16,138.12
  4. Step 4: Simplify right side
    28,072.60x = 625,229,823.05
  5. Step 5: Solve for x
    x = 625,229,823.05/28,072.60
  6. Step 6: Final answer
    x = 22,271.89

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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.