Home / 18,885.50-28,295.45-13,251.25

Finding the Fourth Proportional to 18,885.50, 28,295.45 and 13,251.25

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Solution

The fourth proportional to 18,885.50, 28,295.45 and 13,251.25 is: 19,853.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885.50 : 28,295.45 = 13,251.25 : x
  2. Step 2: Convert to fraction form
    18,885.50/28,295.45 = 13,251.25/x
  3. Step 3: Cross multiply
    18,885.50x = 28,295.45 × 13,251.25
  4. Step 4: Simplify right side
    18,885.50x = 374,949,978.72
  5. Step 5: Solve for x
    x = 374,949,978.72/18,885.50
  6. Step 6: Final answer
    x = 19,853.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.