Home / 28,439.45-39,245.83-15,692.15

Finding the Fourth Proportional to 28,439.45, 39,245.83 and 15,692.15

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Solution

The fourth proportional to 28,439.45, 39,245.83 and 15,692.15 is: 21,654.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,439.45 : 39,245.83 = 15,692.15 : x
  2. Step 2: Convert to fraction form
    28,439.45/39,245.83 = 15,692.15/x
  3. Step 3: Cross multiply
    28,439.45x = 39,245.83 × 15,692.15
  4. Step 4: Simplify right side
    28,439.45x = 615,851,377.63
  5. Step 5: Solve for x
    x = 615,851,377.63/28,439.45
  6. Step 6: Final answer
    x = 21,654.82

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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.