Home / 28,251.96-39,002.22-19,905.72

Finding the Fourth Proportional to 28,251.96, 39,002.22 and 19,905.72

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Solution

The fourth proportional to 28,251.96, 39,002.22 and 19,905.72 is: 27,480.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.96 : 39,002.22 = 19,905.72 : x
  2. Step 2: Convert to fraction form
    28,251.96/39,002.22 = 19,905.72/x
  3. Step 3: Cross multiply
    28,251.96x = 39,002.22 × 19,905.72
  4. Step 4: Simplify right side
    28,251.96x = 776,367,270.70
  5. Step 5: Solve for x
    x = 776,367,270.70/28,251.96
  6. Step 6: Final answer
    x = 27,480.12

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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.